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EMAIL BLACKLIST CHECK The blacklist check will test a mail server IP address against over 100 DNS based email blacklists. (Commonly called Realtime blacklist, DNSBL or RBL). If your mail server has been blacklisted, some email you send may not be delivered. Email blacklists are a common way of reducing spam. If you don't know your mail server's address, startwith a
DNS LOOKUP TOOL
This test will list DNS records for a domain in priority order. The DNS lookup is done directly against the domain's authoritative name server, so changes to DNS Records should show up instantly. By default, the DNS lookup tool will return an IP address if you give it a name (e.g. www.example.com)REVERSE IP LOOKUP
The Reverse Lookup tool will do a reverse IP lookup. If you type in an IP address, we will attempt to locate a dns PTR record for that IP address. You can then click on the results to find out more about that IP Address. Please note that in general, your ISP must setup and maintain these Reverse DNS records (i.e. PTR records) for you. SPF RECORD GENERATOR Welcome to MxToolbox’s SPF record generator. This tool can help you generate a SPF Record or modify your current SPF Record as well as to check the modified record has the correct syntax. If you want to modify an existing SPF Record from a domain, please look for DNS LOOKUP TEXT RECORD ABOUT TXT CHECK. This lookup will list DNS Text (TXT) records for a domain. The DNS lookup is done directly against the domain's authoritative name servers, so changes to DNS TXT Records should show up instantly. DNS TXT records are commonly used for Sender Policy Framework (SPF) records or DKIM, but may serve other miscellaneouspurposes as well.
CNAME LOOKUP
This test will list CNAME records for a domain in priority order. The CNAME lookup is done directly against the domain's authoritative name server, so changes to CNAME Records should show up instantly. Also called a canonical name records, they act as aliases, pointing to another DNS name. For example, you might have a CNAME recorddocs.example
SPF CHECK & SPF LOOKUP ABOUT SPF RECORD CHECK. The SPF Record Check is a diagnostic tool that acts as a Sender Policy Framework (SPF) record lookup and SPF validator. This test will lookup an SPF record for the queried domain name, display the SPF Record (if found), and run a series of diagnostic tests (SPF Validation) against the record, highlighting any errors found with the record that could impact email delivery. EMAIL HEADER ANALYZER, RFC822 PARSER ABOUT EMAIL HEADERS. This tool will make email headers human readable by parsing them according to RFC 822. Email headers are present on every email you receive via the Internet and can provide valuable diagnostic information like hop delays, anti-spam results and more. If you need help getting copies of your email headers, just read thistutorial.
DKIM CHECK- DOMAINKEYS IDENTIFIED MAIL (DKIM) RECORD The first is just using a domain and selector separated by a colon and the second option is using the host/name format of the record. Option 1: (domain): (selector) i.e. mxtoolbox.com:email - where mxtoolbox.com is the domain part and email is the selector, separated by a colon. CHECK YOUR DNS MX RECORDS ONLINE The MX lookup is done directly against the domain's authoritative name server, so changes to MX Records should show up instantly. You can click Diagnostics , which will connect to the mail server, verify reverse DNS records, perform a simple Open Relay check and measure response time performance. You may also check each MX record (IPAddress
EMAIL BLACKLIST CHECK The blacklist check will test a mail server IP address against over 100 DNS based email blacklists. (Commonly called Realtime blacklist, DNSBL or RBL). If your mail server has been blacklisted, some email you send may not be delivered. Email blacklists are a common way of reducing spam. If you don't know your mail server's address, startwith a
DNS LOOKUP TOOL
This test will list DNS records for a domain in priority order. The DNS lookup is done directly against the domain's authoritative name server, so changes to DNS Records should show up instantly. By default, the DNS lookup tool will return an IP address if you give it a name (e.g. www.example.com)REVERSE IP LOOKUP
The Reverse Lookup tool will do a reverse IP lookup. If you type in an IP address, we will attempt to locate a dns PTR record for that IP address. You can then click on the results to find out more about that IP Address. Please note that in general, your ISP must setup and maintain these Reverse DNS records (i.e. PTR records) for you. SPF RECORD GENERATOR Welcome to MxToolbox’s SPF record generator. This tool can help you generate a SPF Record or modify your current SPF Record as well as to check the modified record has the correct syntax. If you want to modify an existing SPF Record from a domain, please look for DNS LOOKUP TEXT RECORD ABOUT TXT CHECK. This lookup will list DNS Text (TXT) records for a domain. The DNS lookup is done directly against the domain's authoritative name servers, so changes to DNS TXT Records should show up instantly. DNS TXT records are commonly used for Sender Policy Framework (SPF) records or DKIM, but may serve other miscellaneouspurposes as well.
CNAME LOOKUP
This test will list CNAME records for a domain in priority order. The CNAME lookup is done directly against the domain's authoritative name server, so changes to CNAME Records should show up instantly. Also called a canonical name records, they act as aliases, pointing to another DNS name. For example, you might have a CNAME recorddocs.example
SPF CHECK & SPF LOOKUP ABOUT SPF RECORD CHECK. The SPF Record Check is a diagnostic tool that acts as a Sender Policy Framework (SPF) record lookup and SPF validator. This test will lookup an SPF record for the queried domain name, display the SPF Record (if found), and run a series of diagnostic tests (SPF Validation) against the record, highlighting any errors found with the record that could impact email delivery. EMAIL HEADER ANALYZER, RFC822 PARSER ABOUT EMAIL HEADERS. This tool will make email headers human readable by parsing them according to RFC 822. Email headers are present on every email you receive via the Internet and can provide valuable diagnostic information like hop delays, anti-spam results and more. If you need help getting copies of your email headers, just read thistutorial.
DKIM CHECK- DOMAINKEYS IDENTIFIED MAIL (DKIM) RECORD The first is just using a domain and selector separated by a colon and the second option is using the host/name format of the record. Option 1: (domain): (selector) i.e. mxtoolbox.com:email - where mxtoolbox.com is the domain part and email is the selector, separated by a colon. EMAIL DELIVERABILITY TOOL This tool requires you to send a test message to MxToolbox. Our systems analyze the headers, the blacklist reputation of your outbound IP address, and your SPF records to generate a comprehensive deliverability report. Free MxToolBox Account. Get 1 Free Monitor*, Email Notifications and Troubleshooting Info. Delivery Center.DOMAIN HEALTH CHECK
The Domain Health Check will execute hundreds of domain/email/network performance tests to make sure all of your systems are online and performing optimally. The report will then return results for your domain and highlight critical problem areas for your domain that need to be resolved. How it works: The report uses DNS to obtain thehostnames
PASSWORD GENERATOR
ABOUT PASSWORD GENERATOR. This password generator tool will generate 15 secure, random passwords which are designed to meet the requirements of most systems. DMARC RECORD GENERATOR ABOUT DMARC RECORD GENERATOR. This tool will help you create a DMARC record specifically for the domain or subdomain you submit. After submitting your domain the tool will check to make sure no DMARC record is published for the domain and provide a quick and advancedsetup option to
BIMI RECORD CHECK
The BIMI Record Lookup / BIMI Check is a diagnostic tool that will look for a BIMI Record for the queried domain name, display the BIMI Record (if found), and run a series of diagnostic checks against the record. Brand Indicators for Message Identification (BIMI) is an industry-wide standards effort to use brand logos as indicators withinDMARC CHECK TOOL
The DMARC Record Lookup / DMARC Check is a diagnostic tool that will parse the DMARC Record for the queried domain name, display the DMARC Record, and run a series of diagnostic checks against the record. Domain-based Message Authentication, Reporting, and Conformance (DMARC) is a mechanism for policy distribution by which anorganization that
DMARC FAILURE REPORTING OPTIONS The destination(s) and nature of failure reports are defined by the “ruf” and “fo” tags. The "ruf" tag deals with where the failure reports should be sent and the "fo" tag, which stands for failure reporting options, determines the type of reports that aresent out.
NETWORK TOOLS FROM MXTOOLBOX DNS Lookup for IP address. smtp. Test mail server SMTP (25) SMTP - SMTP REVERSE DNS MISMATCH More Information About Smtp Reverse Dns Mismatch. The forward lookup (A) of the hostname hostname did not match the reverse lookup (PTR)for the IP Address.
CHECK YOUR DNS MX RECORDS ONLINE ABOUT MX LOOKUP. This test will list MX records for a domain in priority order. The MX lookup is done directly against the domain's authoritative name server, soDNS LOOKUP TOOL
ABOUT DNS LOOKUP. This test will list DNS records for a domain in priority order. The DNS lookup is done directly against the domain's authoritative name server, so EMAIL HEADER ANALYZER, RFC822 PARSER ABOUT EMAIL HEADERS. This tool will make email headers human readable by parsing them according to RFC 822. Email headers are present on every email you receive via the Internet and can provide valuable diagnostic information like hop delays, anti-spam results and more. DNS LOOKUP TEXT RECORD ABOUT TXT CHECK. This lookup will list DNS Text (TXT) records for a domain. The DNS lookup is done directly against the domain's authoritative name servers,CNAME LOOKUP
ABOUT CNAME LOOKUP. This test will list CNAME records for a domain in priority order. The CNAME lookup is done directly against the domain's authoritative name server, so changes to CNAME Records should show upinstantly.
SPF CHECK & SPF LOOKUP ABOUT SPF RECORD CHECK. The SPF Record Check is a diagnostic tool that acts as a Sender Policy Framework (SPF) record lookup and SPF validator. This test will lookup an SPF record for the queried domain name, display the SPF Record (if found), and run a series of diagnostic tests (SPF Validation) against the record, highlighting any errors found with the record that could impact email delivery. DKIM CHECK- DOMAINKEYS IDENTIFIED MAIL (DKIM) RECORD ABOUT DKIM RECORD CHECK. The DKIM Check tool will perform a DKIM record test against a domain name and selector for a valid publishedDKIM key record.
DMARC SUBDOMAIN POLICY TAG Example 2: Domain owner sends no email through subdomains and wants to prevent malicious actors from spoofing subdomains and sending phishing messages. They set a policy of "none" on their organizational domain and a subdomain policy of "reject" for all subdomains. In a DMARC record this would be expressed with tags of p=none; sp=reject; HICS.NHIF.OR.KE DOMAIN HEALTH Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. Suspendisse et porttitor lectus, quisimperdiet mi.
DAN TOR - BLACKLIST
More Information About Dan Tor. This DNS blacklist contains ALL tor nodes (both entry and exit nodes) - The tor nodelist is updated every hour automatically from the live tor network. CHECK YOUR DNS MX RECORDS ONLINE ABOUT MX LOOKUP. This test will list MX records for a domain in priority order. The MX lookup is done directly against the domain's authoritative name server, soDNS LOOKUP TOOL
ABOUT DNS LOOKUP. This test will list DNS records for a domain in priority order. The DNS lookup is done directly against the domain's authoritative name server, so EMAIL HEADER ANALYZER, RFC822 PARSER ABOUT EMAIL HEADERS. This tool will make email headers human readable by parsing them according to RFC 822. Email headers are present on every email you receive via the Internet and can provide valuable diagnostic information like hop delays, anti-spam results and more. DNS LOOKUP TEXT RECORD ABOUT TXT CHECK. This lookup will list DNS Text (TXT) records for a domain. The DNS lookup is done directly against the domain's authoritative name servers,CNAME LOOKUP
ABOUT CNAME LOOKUP. This test will list CNAME records for a domain in priority order. The CNAME lookup is done directly against the domain's authoritative name server, so changes to CNAME Records should show upinstantly.
SPF CHECK & SPF LOOKUP ABOUT SPF RECORD CHECK. The SPF Record Check is a diagnostic tool that acts as a Sender Policy Framework (SPF) record lookup and SPF validator. This test will lookup an SPF record for the queried domain name, display the SPF Record (if found), and run a series of diagnostic tests (SPF Validation) against the record, highlighting any errors found with the record that could impact email delivery. DKIM CHECK- DOMAINKEYS IDENTIFIED MAIL (DKIM) RECORD ABOUT DKIM RECORD CHECK. The DKIM Check tool will perform a DKIM record test against a domain name and selector for a valid publishedDKIM key record.
DMARC SUBDOMAIN POLICY TAG Example 2: Domain owner sends no email through subdomains and wants to prevent malicious actors from spoofing subdomains and sending phishing messages. They set a policy of "none" on their organizational domain and a subdomain policy of "reject" for all subdomains. In a DMARC record this would be expressed with tags of p=none; sp=reject; HICS.NHIF.OR.KE DOMAIN HEALTH Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. Suspendisse et porttitor lectus, quisimperdiet mi.
DAN TOR - BLACKLIST
More Information About Dan Tor. This DNS blacklist contains ALL tor nodes (both entry and exit nodes) - The tor nodelist is updated every hour automatically from the live tor network. DMARC MANAGED SERVICES Managed Services Let MxToolbox Manage it for You! MxToolbox Fully Managed Delivery Center is a complete managed services approach to your email delivery.. Email Setup Assessment - Detailed assessment of your outbound email systems to identify all internal and external senders. Evaluate email delivery specific DNS configuration (SPF,DKIM, DMARC, BIMI).
SPF CHECK & SPF LOOKUP ABOUT SPF RECORD CHECK. The SPF Record Check is a diagnostic tool that acts as a Sender Policy Framework (SPF) record lookup and SPF validator. This test will lookup an SPF record for the queried domain name, display the SPF Record (if found), and run a series of diagnostic tests (SPF Validation) against the record, highlighting any errors found with the record that could impact email delivery. DKIM CHECK- DOMAINKEYS IDENTIFIED MAIL (DKIM) RECORD ABOUT DKIM RECORD CHECK. The DKIM Check tool will perform a DKIM record test against a domain name and selector for a valid publishedDKIM key record.
BIMI RECORD CHECK
ABOUT BIMI RECORD LOOKUP. The BIMI Record Lookup / BIMI Check is a diagnostic tool that will look for a BIMI Record for the queried domain name, display the BIMI Record (if found), and run a series of diagnostic checks against the record. SPF RECORD GENERATOR ABOUT SPF RECORD GENERATOR. Welcome to MxToolbox’s SPF record generator. This tool can help you generate a SPF Record or modify your current SPF Record as well as to check the modified record has thecorrect syntax
CNAME LOOKUP
ABOUT CNAME LOOKUP. This test will list CNAME records for a domain in priority order. The CNAME lookup is done directly against the domain's authoritative name server, so changes to CNAME Records should show upinstantly.
DMARC REPORT ANALYZER ABOUT DMARC REPORT ANALYZER. This tool will make DMARC Aggregate XML reports human readable by parsing and aggregating them by IP address into readable reports. OUTLOOK.COM DOMAIN HEALTH Free Users are allowed only one (1) Domain Health Check every 24 hours. Upgrade to get unlimited Domain Health checks and a free DomainHealth Monitor.
REVERSE IP LOOKUP
ABOUT REVERSE LOOKUP. The Reverse Lookup tool will do a reverse IP lookup. If you type in an IP address, we will attempt to locate a dns PTR record for that IP address.DOMAIN HEALTH CHECK
ABOUT EMAIL HEALTH. The Email Health Check will execute hundreds of domain/email/network performance tests to make sure all of your systems are online and performing optimally. CHECK YOUR DNS MX RECORDS ONLINE ABOUT MX LOOKUP. This test will list MX records for a domain in priority order. The MX lookup is done directly against the domain's authoritative name server, soDNS LOOKUP TOOL
ABOUT DNS LOOKUP. This test will list DNS records for a domain in priority order. The DNS lookup is done directly against the domain's authoritative name server, so DNS LOOKUP TEXT RECORD ABOUT TXT CHECK. This lookup will list DNS Text (TXT) records for a domain. The DNS lookup is done directly against the domain's authoritative name servers, DKIM CHECK- DOMAINKEYS IDENTIFIED MAIL (DKIM) RECORD ABOUT DKIM RECORD CHECK. The DKIM Check tool will perform a DKIM record test against a domain name and selector for a valid publishedDKIM key record.
CNAME LOOKUP
ABOUT CNAME LOOKUP. This test will list CNAME records for a domain in priority order. The CNAME lookup is done directly against the domain's authoritative name server, so changes to CNAME Records should show upinstantly.
SPF CHECK & SPF LOOKUP ABOUT SPF RECORD CHECK. The SPF Record Check is a diagnostic tool that acts as a Sender Policy Framework (SPF) record lookup and SPF validator. This test will lookup an SPF record for the queried domain name, display the SPF Record (if found), and run a series of diagnostic tests (SPF Validation) against the record, highlighting any errors found with the record that could impact email delivery. EMAIL HEADER ANALYZER, RFC822 PARSER ABOUT EMAIL HEADERS. This tool will make email headers human readable by parsing them according to RFC 822. Email headers are present on every email you receive via the Internet and can provide valuable diagnostic information like hop delays, anti-spam results and more. DMARC SUBDOMAIN POLICY TAG Example 2: Domain owner sends no email through subdomains and wants to prevent malicious actors from spoofing subdomains and sending phishing messages. They set a policy of "none" on their organizational domain and a subdomain policy of "reject" for all subdomains. In a DMARC record this would be expressed with tags of p=none; sp=reject; DMARC FAILURE REPORTING OPTIONS The destination(s) and nature of failure reports are defined by the “ruf” and “fo” tags. The "ruf" tag deals with where the failure reports should be sent and the "fo" tag, which stands for failure reporting options, determines the type of reports that aresent out.
DAN TOR - BLACKLIST
More Information About Dan Tor. This DNS blacklist contains ALL tor nodes (both entry and exit nodes) - The tor nodelist is updated every hour automatically from the live tor network. CHECK YOUR DNS MX RECORDS ONLINE ABOUT MX LOOKUP. This test will list MX records for a domain in priority order. The MX lookup is done directly against the domain's authoritative name server, soDNS LOOKUP TOOL
ABOUT DNS LOOKUP. This test will list DNS records for a domain in priority order. The DNS lookup is done directly against the domain's authoritative name server, so DNS LOOKUP TEXT RECORD ABOUT TXT CHECK. This lookup will list DNS Text (TXT) records for a domain. The DNS lookup is done directly against the domain's authoritative name servers, DKIM CHECK- DOMAINKEYS IDENTIFIED MAIL (DKIM) RECORD ABOUT DKIM RECORD CHECK. The DKIM Check tool will perform a DKIM record test against a domain name and selector for a valid publishedDKIM key record.
CNAME LOOKUP
ABOUT CNAME LOOKUP. This test will list CNAME records for a domain in priority order. The CNAME lookup is done directly against the domain's authoritative name server, so changes to CNAME Records should show upinstantly.
SPF CHECK & SPF LOOKUP ABOUT SPF RECORD CHECK. The SPF Record Check is a diagnostic tool that acts as a Sender Policy Framework (SPF) record lookup and SPF validator. This test will lookup an SPF record for the queried domain name, display the SPF Record (if found), and run a series of diagnostic tests (SPF Validation) against the record, highlighting any errors found with the record that could impact email delivery. EMAIL HEADER ANALYZER, RFC822 PARSER ABOUT EMAIL HEADERS. This tool will make email headers human readable by parsing them according to RFC 822. Email headers are present on every email you receive via the Internet and can provide valuable diagnostic information like hop delays, anti-spam results and more. DMARC SUBDOMAIN POLICY TAG Example 2: Domain owner sends no email through subdomains and wants to prevent malicious actors from spoofing subdomains and sending phishing messages. They set a policy of "none" on their organizational domain and a subdomain policy of "reject" for all subdomains. In a DMARC record this would be expressed with tags of p=none; sp=reject; DMARC FAILURE REPORTING OPTIONS The destination(s) and nature of failure reports are defined by the “ruf” and “fo” tags. The "ruf" tag deals with where the failure reports should be sent and the "fo" tag, which stands for failure reporting options, determines the type of reports that aresent out.
DKIM CHECK- DOMAINKEYS IDENTIFIED MAIL (DKIM) RECORD ABOUT DKIM RECORD CHECK. The DKIM Check tool will perform a DKIM record test against a domain name and selector for a valid publishedDKIM key record.
SPF RECORD GENERATOR ABOUT SPF RECORD GENERATOR. Welcome to MxToolbox’s SPF record generator. This tool can help you generate a SPF Record or modify your current SPF Record as well as to check the modified record has thecorrect syntax
DMARC MANAGED SERVICES Managed Services Let MxToolbox Manage it for You! MxToolbox Fully Managed Delivery Center is a complete managed services approach to your email delivery.. Email Setup Assessment - Detailed assessment of your outbound email systems to identify all internal and external senders. Evaluate email delivery specific DNS configuration (SPF,DKIM, DMARC, BIMI).
SPF CHECK & SPF LOOKUP ABOUT SPF RECORD CHECK. The SPF Record Check is a diagnostic tool that acts as a Sender Policy Framework (SPF) record lookup and SPF validator. This test will lookup an SPF record for the queried domain name, display the SPF Record (if found), and run a series of diagnostic tests (SPF Validation) against the record, highlighting any errors found with the record that could impact email delivery.BIMI RECORD CHECK
ABOUT BIMI RECORD LOOKUP. The BIMI Record Lookup / BIMI Check is a diagnostic tool that will look for a BIMI Record for the queried domain name, display the BIMI Record (if found), and run a series of diagnostic checks against the record.REVERSE IP LOOKUP
ABOUT REVERSE LOOKUP. The Reverse Lookup tool will do a reverse IP lookup. If you type in an IP address, we will attempt to locate a dns PTR record for that IP address.CNAME LOOKUP
ABOUT CNAME LOOKUP. This test will list CNAME records for a domain in priority order. The CNAME lookup is done directly against the domain's authoritative name server, so changes to CNAME Records should show upinstantly.
DMARC REPORT ANALYZER ABOUT DMARC REPORT ANALYZER. This tool will make DMARC Aggregate XML reports human readable by parsing and aggregating them by IP address into readable reports. OUTLOOK.COM DOMAIN HEALTH Free Users are allowed only one (1) Domain Health Check every 24 hours. Upgrade to get unlimited Domain Health checks and a free DomainHealth Monitor.
DOMAIN HEALTH CHECK
ABOUT EMAIL HEALTH. The Email Health Check will execute hundreds of domain/email/network performance tests to make sure all of your systems are online and performing optimally. CHECK YOUR DNS MX RECORDS ONLINE The MX lookup is done directly against the domain's authoritative name server, so changes to MX Records should show up instantly. You can click Diagnostics , which will connect to the mail server, verify reverse DNS records, perform a simple Open Relay check and measure response time performance. You may also check each MX record (IPAddress
MX LOOKUP TOOL
The MX lookup is done directly against the domain's authoritative name server, so changes to MX Records should show up instantly. You can click Diagnostics , which will connect to the mail server, verify reverse DNS records, perform a simple Open Relay check and measure response time performance. You may also check each MX record (IPAddress
EMAIL BLACKLIST CHECK The blacklist check will test a mail server IP address against over 100 DNS based email blacklists. (Commonly called Realtime blacklist, DNSBL or RBL). If your mail server has been blacklisted, some email you send may not be delivered. Email blacklists are a common way of reducing spam. If you don't know your mail server's address, startwith a
DNS LOOKUP TOOL
This test will list DNS records for a domain in priority order. The DNS lookup is done directly against the domain's authoritative name server, so changes to DNS Records should show up instantly. By default, the DNS lookup tool will return an IP address if you give it a name (e.g. www.example.com)REVERSE IP LOOKUP
The Reverse Lookup tool will do a reverse IP lookup. If you type in an IP address, we will attempt to locate a dns PTR record for that IP address. You can then click on the results to find out more about that IP Address. Please note that in general, your ISP must setup and maintain these Reverse DNS records (i.e. PTR records) for you.CNAME LOOKUP
This test will list CNAME records for a domain in priority order. The CNAME lookup is done directly against the domain's authoritative name server, so changes to CNAME Records should show up instantly. Also called a canonical name records, they act as aliases, pointing to another DNS name. For example, you might have a CNAME recorddocs.example
SUBNET CALCULATOR
ABOUT SUBNET CALCULATOR. The subnet calculator lets you enter a subnet range (CIDR) and see IP address information about that range You can type your range directly in CIDR notation, or use the optional Mask pull-down: 74.125.227.0/29. 74.125.227.0, then select Optional Mask from dropdown. This is a useful feature for service providers andPASSWORD GENERATOR
ABOUT PASSWORD GENERATOR. This password generator tool will generate 15 secure, random passwords which are designed to meet the requirements of most systems. EMAIL HEADER ANALYZER, RFC822 PARSER ABOUT EMAIL HEADERS. This tool will make email headers human readable by parsing them according to RFC 822. Email headers are present on every email you receive via the Internet and can provide valuable diagnostic information like hop delays, anti-spam results and more. If you need help getting copies of your email headers, just read thistutorial.
DKIM CHECK- DOMAINKEYS IDENTIFIED MAIL (DKIM) RECORD The first is just using a domain and selector separated by a colon and the second option is using the host/name format of the record. Option 1: (domain): (selector) i.e. mxtoolbox.com:email - where mxtoolbox.com is the domain part and email is the selector, separated by a colon. CHECK YOUR DNS MX RECORDS ONLINE The MX lookup is done directly against the domain's authoritative name server, so changes to MX Records should show up instantly. You can click Diagnostics , which will connect to the mail server, verify reverse DNS records, perform a simple Open Relay check and measure response time performance. You may also check each MX record (IPAddress
MX LOOKUP TOOL
The MX lookup is done directly against the domain's authoritative name server, so changes to MX Records should show up instantly. You can click Diagnostics , which will connect to the mail server, verify reverse DNS records, perform a simple Open Relay check and measure response time performance. You may also check each MX record (IPAddress
EMAIL BLACKLIST CHECK The blacklist check will test a mail server IP address against over 100 DNS based email blacklists. (Commonly called Realtime blacklist, DNSBL or RBL). If your mail server has been blacklisted, some email you send may not be delivered. Email blacklists are a common way of reducing spam. If you don't know your mail server's address, startwith a
DNS LOOKUP TOOL
This test will list DNS records for a domain in priority order. The DNS lookup is done directly against the domain's authoritative name server, so changes to DNS Records should show up instantly. By default, the DNS lookup tool will return an IP address if you give it a name (e.g. www.example.com)REVERSE IP LOOKUP
The Reverse Lookup tool will do a reverse IP lookup. If you type in an IP address, we will attempt to locate a dns PTR record for that IP address. You can then click on the results to find out more about that IP Address. Please note that in general, your ISP must setup and maintain these Reverse DNS records (i.e. PTR records) for you.CNAME LOOKUP
This test will list CNAME records for a domain in priority order. The CNAME lookup is done directly against the domain's authoritative name server, so changes to CNAME Records should show up instantly. Also called a canonical name records, they act as aliases, pointing to another DNS name. For example, you might have a CNAME recorddocs.example
SUBNET CALCULATOR
ABOUT SUBNET CALCULATOR. The subnet calculator lets you enter a subnet range (CIDR) and see IP address information about that range You can type your range directly in CIDR notation, or use the optional Mask pull-down: 74.125.227.0/29. 74.125.227.0, then select Optional Mask from dropdown. This is a useful feature for service providers andPASSWORD GENERATOR
ABOUT PASSWORD GENERATOR. This password generator tool will generate 15 secure, random passwords which are designed to meet the requirements of most systems. EMAIL HEADER ANALYZER, RFC822 PARSER ABOUT EMAIL HEADERS. This tool will make email headers human readable by parsing them according to RFC 822. Email headers are present on every email you receive via the Internet and can provide valuable diagnostic information like hop delays, anti-spam results and more. If you need help getting copies of your email headers, just read thistutorial.
DKIM CHECK- DOMAINKEYS IDENTIFIED MAIL (DKIM) RECORD The first is just using a domain and selector separated by a colon and the second option is using the host/name format of the record. Option 1: (domain): (selector) i.e. mxtoolbox.com:email - where mxtoolbox.com is the domain part and email is the selector, separated by a colon. EMAIL DELIVERABILITY TOOL This tool requires you to send a test message to MxToolbox. Our systems analyze the headers, the blacklist reputation of your outbound IP address, and your SPF records to generate a comprehensive deliverability report. Free MxToolBox Account. Get 1 Free Monitor*, Email Notifications and Troubleshooting Info. Delivery Center.WHOIS LOOKUP TOOL
This test will return WHOIS registration results for a DOMAIN name. Depending on the registrar, you can see various information like who is it registered to, when it was registered and when it expires, where the DNS is hosted, and more. In some cases, you will be able to go the registrar's site to get more information. Free MxToolBox Account.PASSWORD GENERATOR
ABOUT PASSWORD GENERATOR. This password generator tool will generate 15 secure, random passwords which are designed to meet the requirements of most systems.EMAIL SERVER TEST
This test will connect to a mail server via SMTP, perform a simple Open Relay Test and verify the server has a reverse DNS (PTR) record. It will also measure the response times for the mail server. If you don't know your mail server's address, start with a MX Lookup. Free MxToolBox Account. Get 1 Free Monitor*, Email Notifications andCNAME LOOKUP
This test will list CNAME records for a domain in priority order. The CNAME lookup is done directly against the domain's authoritative name server, so changes to CNAME Records should show up instantly. Also called a canonical name records, they act as aliases, pointing to another DNS name. For example, you might have a CNAME recorddocs.example
BIMI RECORD CHECK
The BIMI Record Lookup / BIMI Check is a diagnostic tool that will look for a BIMI Record for the queried domain name, display the BIMI Record (if found), and run a series of diagnostic checks against the record. Brand Indicators for Message Identification (BIMI) is an industry-wide standards effort to use brand logos as indicators withinpurposes as well.
DKIM CHECK- DOMAINKEYS IDENTIFIED MAIL (DKIM) RECORD The first is just using a domain and selector separated by a colon and the second option is using the host/name format of the record. Option 1: (domain): (selector) i.e. mxtoolbox.com:email - where mxtoolbox.com is the domain part and email is the selector, separated by a colon. DMARC RECORD GENERATOR ABOUT DMARC RECORD GENERATOR. This tool will help you create a DMARC record specifically for the domain or subdomain you submit. After submitting your domain the tool will check to make sure no DMARC record is published for the domain and provide a quick and advancedsetup option to
DOMAIN HEALTH CHECK
ABOUT EMAIL HEALTH. The Email Health Check will execute hundreds of domain/email/network performance tests to make sure all of your systems are online and performing optimally. CHECK YOUR DNS MX RECORDS ONLINE The MX lookup is done directly against the domain's authoritative name server, so changes to MX Records should show up instantly. You can click Diagnostics , which will connect to the mail server, verify reverse DNS records, perform a simple Open Relay check and measure response time performance. You may also check each MX record (IPAddress
MX LOOKUP TOOL
ABOUT MX LOOKUP. This test will list MX records for a domain in priority order. The MX lookup is done directly against the domain's authoritative name server, so EMAIL BLACKLIST CHECK The blacklist check will test a mail server IP address against over 100 DNS based email blacklists. (Commonly called Realtime blacklist, DNSBL or RBL). If your mail server has been blacklisted, some email you send may not be delivered. Email blacklists are a common way of reducing spam. If you don't know your mail server's address, startwith a
DNS LOOKUP TOOL
This test will list DNS records for a domain in priority order. The DNS lookup is done directly against the domain's authoritative name server, so changes to DNS Records should show up instantly. By default, the DNS lookup tool will return an IP address if you give it a name (e.g. www.example.com)CNAME LOOKUP
This test will list CNAME records for a domain in priority order. The CNAME lookup is done directly against the domain's authoritative name server, so changes to CNAME Records should show up instantly. Also called a canonical name records, they act as aliases, pointing to another DNS name. For example, you might have a CNAME recorddocs.example
DNS LOOKUP TEXT RECORD ABOUT TXT CHECK. This lookup will list DNS Text (TXT) records for a domain. The DNS lookup is done directly against the domain's authoritative name servers, so changes to DNS TXT Records should show up instantly. DNS TXT records are commonly used for Sender Policy Framework (SPF) records or DKIM, but may serve other miscellaneouspurposes as well.
SPF CHECK & SPF LOOKUP ABOUT SPF RECORD CHECK. The SPF Record Check is a diagnostic tool that acts as a Sender Policy Framework (SPF) record lookup and SPF validator. This test will lookup an SPF record for the queried domain name, display the SPF Record (if found), and run a series of diagnostic tests (SPF Validation) against the record, highlighting any errors found with the record that could impact email delivery. EMAIL HEADER ANALYZER, RFC822 PARSER ABOUT EMAIL HEADERS. This tool will make email headers human readable by parsing them according to RFC 822. Email headers are present on every email you receive via the Internet and can provide valuable diagnostic information like hop delays, anti-spam results and more. If you need help getting copies of your email headers, just read thistutorial.
DMARC REPORT ANALYZER ABOUT DMARC REPORT ANALYZER. This tool will make DMARC Aggregate XML reports human readable by parsing and aggregating them by IP address into readable reports. DMARC Aggregate XML reports are sent by mail receivers (like Gmail, Yahoo!, & more) and include valuable data such as message volumes seen, SPF/DKIM Authentication rates, actions taken DMARC SUBDOMAIN POLICY TAG DMARC Subdomain Policy Tag (SP) When creating a DMARC record for a organizational domain (think google.com), a domain owner can add an "sp" tag to the DMARC record. This tag specifies what the policy should be for ALL subdomains of that domain. This tag functions exactly like the "p" tag does, as it tells a receiving mail server(think Gmail
CHECK YOUR DNS MX RECORDS ONLINE The MX lookup is done directly against the domain's authoritative name server, so changes to MX Records should show up instantly. You can click Diagnostics , which will connect to the mail server, verify reverse DNS records, perform a simple Open Relay check and measure response time performance. You may also check each MX record (IPAddress
MX LOOKUP TOOL
ABOUT MX LOOKUP. This test will list MX records for a domain in priority order. The MX lookup is done directly against the domain's authoritative name server, so EMAIL BLACKLIST CHECK The blacklist check will test a mail server IP address against over 100 DNS based email blacklists. (Commonly called Realtime blacklist, DNSBL or RBL). If your mail server has been blacklisted, some email you send may not be delivered. Email blacklists are a common way of reducing spam. If you don't know your mail server's address, startwith a
DNS LOOKUP TOOL
This test will list DNS records for a domain in priority order. The DNS lookup is done directly against the domain's authoritative name server, so changes to DNS Records should show up instantly. By default, the DNS lookup tool will return an IP address if you give it a name (e.g. www.example.com) DNS LOOKUP TEXT RECORD ABOUT TXT CHECK. This lookup will list DNS Text (TXT) records for a domain. The DNS lookup is done directly against the domain's authoritative name servers, so changes to DNS TXT Records should show up instantly. DNS TXT records are commonly used for Sender Policy Framework (SPF) records or DKIM, but may serve other miscellaneouspurposes as well.
CNAME LOOKUP
This test will list CNAME records for a domain in priority order. The CNAME lookup is done directly against the domain's authoritative name server, so changes to CNAME Records should show up instantly. Also called a canonical name records, they act as aliases, pointing to another DNS name. For example, you might have a CNAME recorddocs.example
EMAIL HEADER ANALYZER, RFC822 PARSER ABOUT EMAIL HEADERS. This tool will make email headers human readable by parsing them according to RFC 822. Email headers are present on every email you receive via the Internet and can provide valuable diagnostic information like hop delays, anti-spam results and more. If you need help getting copies of your email headers, just read thistutorial.
DKIM CHECK- DOMAINKEYS IDENTIFIED MAIL (DKIM) RECORD The first is just using a domain and selector separated by a colon and the second option is using the host/name format of the record. Option 1: (domain): (selector) i.e. mxtoolbox.com:email - where mxtoolbox.com is the domain part and email is the selector, separated by a colon. DMARC RECORD GENERATOR ABOUT DMARC RECORD GENERATOR. This tool will help you create a DMARC record specifically for the domain or subdomain you submit. After submitting your domain the tool will check to make sure no DMARC record is published for the domain and provide a quick and advancedsetup option to
DAN TOR - BLACKLIST
More Information About Dan Tor. This DNS blacklist contains ALL tor nodes (both entry and exit nodes) - The tor nodelist is updated every hour automatically from the live tor network. There is no complaint procedure to have an IP address removed from this list as it will be automatically removed once the tor node ceases to run (with a maximumREVERSE IP LOOKUP
The Reverse Lookup tool will do a reverse IP lookup. If you type in an IP address, we will attempt to locate a dns PTR record for that IP address. You can then click on the results to find out more about that IP Address. Please note that in general, your ISP must setup and maintain these Reverse DNS records (i.e. PTR records) for you. DMARC MANAGED SERVICES Managed Services Let MxToolbox Manage it for You! MxToolbox Fully Managed Delivery Center is a complete managed services approach to your email delivery.. Email Setup Assessment - Detailed assessment of your outbound email systems to identify all internal and external senders. Evaluate email delivery specific DNS configuration (SPF,DKIM, DMARC, BIMI).
DNS LOOKUP TOOL
This test will list DNS records for a domain in priority order. The DNS lookup is done directly against the domain's authoritative name server, so changes to DNS Records should show up instantly. By default, the DNS lookup tool will return an IP address if you give it a name (e.g. www.example.com)CNAME LOOKUP
This test will list CNAME records for a domain in priority order. The CNAME lookup is done directly against the domain's authoritative name server, so changes to CNAME Records should show up instantly. Also called a canonical name records, they act as aliases, pointing to another DNS name. For example, you might have a CNAME recorddocs.example
SPF RECORD GENERATOR Welcome to MxToolbox’s SPF record generator. This tool can help you generate a SPF Record or modify your current SPF Record as well as to check the modified record has the correct syntax. If you want to modify an existing SPF Record from a domain, please look forBIMI RECORD CHECK
The BIMI Record Lookup / BIMI Check is a diagnostic tool that will look for a BIMI Record for the queried domain name, display the BIMI Record (if found), and run a series of diagnostic checks against the record. Brand Indicators for Message Identification (BIMI) is an industry-wide standards effort to use brand logos as indicators withinDOMAIN HEALTH CHECK
ABOUT EMAIL HEALTH. The Email Health Check will execute hundreds of domain/email/network performance tests to make sure all of your systems are online and performing optimally. OUTLOOK.COM DOMAIN HEALTH outlook.com Domain Health. Fix the Problem. Domain Health. Free Users are allowed only one (1) Domain Health Check every 24 hours. Upgrade to get unlimited Domain Health checks and a free Domain Health Monitor. Our Domain Health Monitor performs over 30 different tests on your domain every few minutes and immediately alerts you to issues.Toggle navigation
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MX LOOKUP
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Solve Email Delivery ProblemsABOUT MX LOOKUP
This test will list MX records for a domain in priority order. The MX lookup is done directly against the domain's authoritative name server, so changes to MX Records should show up instantly. You can click Diagnostics , which will connect to the mail server, verify reverse DNS records, perform a simple Open Relay check and measure response time performance. You may also check each MX record (IP Address) against 105 DNS based blacklists . (Commonly calledRBLs, DNSBLs)
FREE MXTOOLBOX ACCOUNT GET 1 FREE MONITOR*, Email Notifications and Troubleshooting InfoDELIVERY CENTER
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Round-trip email server monitoring for latency and email deliverability issuesBULK LOOKUP
Run Bulk lists of IPs and Domains Blacklist, MX/NS/A Record, GeoIP, &more data
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