Getting 'resource unavailable' Response Talking To Proofpoint Via DKIM Milter
Last updated on SEPTEMBER 01, 2017
Applies to:Oracle Communications Messaging Server - Version 7.0.4 and later
Information in this document applies to any platform.
Messages from a specific sender always seem to trigger a 'resource unavailable' error from milter and get stuck in the reprocess queue.
Snippet from mail.log_current:
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