DKIM signing not applied to out-of-office mails


Active Member
May 5, 2007

We use PMG as a relay for outgoing mail. I noticed that out-of-office auto replies end up in spam folders and when looking at the headers, no DKIM signing is being done. Regular mails do have the DKIM headers. The sender domain is the same as the one configured in the Mail Proxy configuration. The only difference I can observe is in the Message-ID header, which has the fully qualified name of the e-mail server instead of the domain.

What could be the reason the out-of-office auto replies do not get treated for DKIM?




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