[CentOS] sendmail Deferred mail - reason unknown

Sean Carolan wrote on Mon, 15 Dec 2008 10:15:15 -0600:

> Do you have any ideas how I can begin to troubleshoot this?

sendmail -v -q (will flush the mail queue, just wait and look).
First reason I would think of: greylisting.

Kai

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Kai Schätzl, Berlin, Germany
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