SPF / DKIM / DMARC

http://www.mail-tester.com/spf-dkim-check

www.mail-tester.com/spf-dkim-check

Check if your domain has these 2 email signatures set up and valid. What's DKIM and SPF? They're 2 effective email signatures against spoofing, phishing or impersonation. When recipients receive your emails, their spam filters automatically poke your d ...

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http://www.mtgsy.net/dns/utilities.php

www.mtgsy.net/dns/utilities.php

These network utilities are provided by CloudfloorDNS, providers of high quality dns and domain management services.

  • Ping Utility
  • DNS Lookup Utility (including zone transfer)
  • Test if ...

    Visited158
http://www.protodave.com/tools/dkim-key-checker/

www.protodave.com/tools/dkim-key-checker/

Use this tool to lookup and verify a DKIM TXT record and determine its public key length. You can read more about why I wrote this tool. Please let me know if you find a record that doesn’t parse properly and I’ll update my code.

Visited188
http://www.appmaildev.com/en/dkim/

www.appmaildev.com/en/dkim/

This is a DKIM test tool provided by AdminSystem Software Limited. To use it you send an email to the account they temporarily create for you and then you get a reply with a report in it.

This page also has instructions on how to test DKIM sign ...

Visited105
http://dkimvalidator.com/

dkimvalidator.com

Now you can quickly view your DomainKeys, DKIM, and SPF validity, and SpamAssassin score in one place. Just send an email to any address @dkimvalidator.com. Then check here to see the results.

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http://dmarc-qa.com/

dmarc-qa.com

When a bunch of people make new things all based on a new technical specification, interoperability is often rough around the edges. The folks behind dmarcian put together dmarc-qa.com to host a suite of tests that DMARC developers can use to ensure th ...

Visited83
http://kitterman.com/dmarc/assistant.html

kitterman.com/dmarc/assistant.html

Kitterman Technical Services maintains the best DMARC Record Assistant that can quickly create perfect DMARC records for your domain. DMARC's various record options are clearly explained. Use this to avoid typos and to create records that do what you i ...

Visited105
http://www.appmaildev.com/en/domainkeys/

www.appmaildev.com/en/domainkeys/

This is a DomainKeys test tool provided by AdminSystem Software Limited. To use it you send an email to the account they temporarily create for you and then you get a reply with a report in it.

This page also has instructions on how to test Dom ...

Visited84
https://www.port25.com/support/authentication-center/email-verification/

www.port25.com/support/authentication-center/email-verificat...

Discover the rich features in PowerMTA that help you adopt and adapt to changing email authentication standards including support for DKIM and SPF and setup for DMARC.  To use our automated testing tool, send a sample of a marketing email or newsl ...

Visited129
http://www.websitepulse.com/help/tools.php

www.websitepulse.com/help/tools.php

Website

  • Website Test - The Website test verifies the server status, downloads the full HTML content an ...

    Visited105
http://www.unifiedemail.net/Tools/Default.aspx

www.unifiedemail.net/Tools/Default.aspx

As a free service to the public, our tools can provide system administrators with the insight to solve many of the most common problems with eMail Deliverability.

  • Email Content Analysis - Unified eMail's Content Analysis ...

    Visited159
http://mxtoolbox.com/

mxtoolbox.com

Check your DNS MX Records online and other aspects of email and DNS.

The SuperTool, All of your MX record, DNS, blacklist and SMTP diagnostics in one integrated tool. Their section of networks tools is comprehensive.

This site also offe ...

Visited125
https://otalliance.org/resources/spf-dmarc-record-validator

otalliance.org/resources/spf-dmarc-record-validator

Tool to validate if SPF and DMARC records have been "published" in a domain's DNS zone file. The tool will query the DNS of the respective domains and present the records found. Up to 500 domains may be entered. Tools to validate SPF and DMARC records ...

Visited113
http://vamsoft.com/support/tools/spf-policy-tester

vamsoft.com/support/tools/spf-policy-tester

Test IP addresses against live or a directly entered SPF policy and get a detailed evaluation log of the test. Helps with troubleshooting.

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http://spf.myisp.ch/

spf.myisp.ch

This online SPF checker visualises and verifies SPF records.

Visited777
http://www.mailcleaner.net/tools/test_spf.html

www.mailcleaner.net/tools/test_spf.html

This page let you test domains for valid SPF records and/or presence in the MailCleaner's trusted SPF list.

Visited203
http://www.kitterman.com/spf/validate.html

www.kitterman.com/spf/validate.html

These tools are meant to help you deploy SPF records for your domain. They use an actual RFC 7208 compliant library (pyspf) for tests and will dynamically test for processing limit errors (no other testers I'm aware of do this). This site uses a cachin ...

Visited88
http://vamsoft.com/support/tools/spf-syntax-validator

vamsoft.com/support/tools/spf-syntax-validator

Helps creating SPF policies by validating the syntax of SPF policy data.

Visited111
http://www.appmaildev.com/en/spf/

www.appmaildev.com/en/spf/

This is a SPF test tool provided by AdminSystem Software Limited. To use it you send an email to the account they temporarily create for you and then you get a reply with a report in it.

This page also has instructions on how to test SPF (Sende ...

Visited72