Mail-DKIM and DKIMproxy

Known Issues

Please check the Frequently Asked Questions page if you have a problem. It is possible there is already a known solution to your problem.

Here I will try to document unresolved issues with Mail::DKIM or DKIMproxy.

DNS support -- verification is really slow if the first DNS server listed in /etc/resolv.conf is not responding. If you do a lot of DKIM verification, it's probably a good idea to install a local DNS resolver.
Crypt::OpenSSL::RSA - the test script segfaults if version 0.21 of Crypt::OpenSSL::RSA is installed. It appears version 0.22 is the minimum supported version.

If you notice any problems, let me know so I can add them to this list.

Interoperability Testing

The following email address is configured to auto-respond with DKIM verification results. It uses the dkimproxy implementation as found on this web page.

test@dkimtest.jason.long.name

For best results, place the words dkim and/or test in the subject of your message. This will reduce the likelihood of your message getting quarantined by my spam filters.

Note 1: the above auto-responder responds to the SMTP envelope sender; i.e. it ignores contents of From: and Reply-to: headers when making its reply.

Note 2: the above auto-responder deals with the validity of the signature itself. It does NOT apply any signing policies.

The following auto-responders are offered by others, and will test your signed messages against other implementations:

Address	Implementation	Status
sa-test AT sendmail DOT net	dkim-milter	checks DKIM and DomainKeys
dktest AT exhalus DOT net	DKeyEvent	checks DKIM and DomainKeys
dktest AT blackops DOT org	OpenDKIM filter	checks DKIM
check-auth AT verifier DOT port25 DOT com	PowerMTA	checks DKIM and DomainKeys
dkim-test AT altn DOT com	MDaemon	checks DKIM
autorespond+dkim AT dk DOT elandsys DOT com	dkim-milter	checks DKIM

Support

If you need help with DKIMproxy, or with the Perl module (Mail::DKIM), feel free to use one of the following tools:

Sourceforge Project page for DKIMproxy - access previous versions of DKIMproxy, submit bug reports, download patches
DKIMproxy Project Forums - a web-based discussion forum for DKIMproxy and Mail::DKIM (forum provided by SourceForge)
DKIMproxy-Users Mailing List - an email-based discussion system with web-based archives.
meulie.net Forums - Evert Meulie had created a section on his site for DKIMproxy; it's been around longer than the Sourceforge forums, so it may have more answers (forums provided by Evert Meulie)
CPAN Forums - this discussion forum is for the Mail::DKIM module. If you want to discuss usage of the Mail::DKIM module in your own programs you can ask here (forum provided by CPAN)

Please also post comments, suggestions, and patches, if you have any. I will respond as I am able.

You can also email me directly (jlong@messiah.edu), but be warned I sometimes take a while to respond to email. If it's about something others would know or be interested in, please use the SourceForge-provided forum or mailing list.