What would cause intermittent DomainKey-Status: failures?

Posted by wherestheph on Server Fault See other posts from Server Fault or by wherestheph
Published on 2009-12-18T23:46:56Z Indexed on 2010/03/26 10:03 UTC
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email

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domainkeys

Every week, we send something like a small newsletter. Sometimes, the header in the newsletter says

DomainKey-Status: bad (test mode)

Sometimes it says

DomainKey-Status: good (test mode)

All the other headers in the email are the same (besides expected time and message id differences). None of the email server configuration has changed. What would cause this problem?

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