Perl Mail::DomainKeys module doesn’t verify gmail messages

I was trying to verify a DomainKeys message from gmail with the Perl Mail::DomainKeys module and it wouldn’t verify for some reason.  After digging into the module a bit, I found that gmail doesn’t send the ‘q=’ parameter to specify the method to look up the public key.  Obviously this should default to ‘dns’ since it is the only currently supported method.

I modified Signature.pm and added this to line 56:

$self->{‘PROT’} = $self->{‘PROT’} || ‘dns’;

And now the messages are verified properly.  I’ve emailed the module’s author about it, but am not sure if he’ll bother with releasing a fix.  DomainKeys is being dropped in favor of DKIM.

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