why DKIM bad signature

Posted by Ashish on Stack Overflow See other posts from Stack Overflow or by Ashish
Published on 2010-06-07T06:32:10Z Indexed on 2010/06/07 6:42 UTC
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filter

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mail

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postfix

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dkim

Hi,

I have setup a postfix mail receiving server.

On this I am using DKIM milter to verify incoming mail DKIM signatures.

From some email clients I am getting the following 'bad signature data' error:

Jun  7 02:10:09 ip-10-194-99-63 dkim-filter[27964]: (unknown-jobid) no signing domain match for `gmail.com'
Jun  7 02:10:09 ip-10-194-99-63 dkim-filter[27964]: (unknown-jobid) no signing subdomain match for `gmail.com'
Jun  7 02:10:09 ip-10-194-99-63 dkim-filter[27964]: (unknown-jobid) no signing keylist match for `[email protected]'
Jun  7 02:10:09 ip-10-194-99-63 dkim-filter[27964]: (unknown-jobid) not internal
Jun  7 02:10:09 ip-10-194-99-63 dkim-filter[27964]: (unknown-jobid) not authenticated
Jun  7 02:10:09 ip-10-194-99-63 dkim-filter[27964]: (unknown-jobid) mode select: verifying
Jun  7 02:10:09 ip-10-194-99-63 dkim-filter[27964]: BA6E210015D: bad signature data
Jun  7 02:10:10 ip-10-194-99-63 postfix/cleanup[30131]: BA6E210015D: milter-reject: END-OF-MESSAGE from mail-pv0-f176.google.com[74.125.83.176]: 5.7.0 bad DKIM signature data; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<mail-pv0-f176.google.com>

can anybody give me any clue why I am getting the above error in my postfix logs

and

what remedies I can put in to rectify or workaround this

or

warn the sender.

Thanks in advance

Ashish Sharma

© Stack Overflow or respective owner

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