[Mimedefang] Sendmail Skipping Filter

Nathan F nathan at zenlok.com
Tue Oct 21 22:31:19 EDT 2014

Hi all,

As these things go, I sometimes treat sendmail as if it might be doing
something under the covers that I am not entirely aware of, but in
this case it turns out that I simply made an error.  I had a call to
an external program whose (extremely rare) failure was not resulting
in a proper temp failure return value from mimedefang simply because I
wasn't calling action_tempfail.  This resulted in the mail attempting
delivery because it 1) hadn't yet hit the discard and 2) was not temp
failing.  It was slipping through the cracks in other words.  I had sorted
it out minutes after sending the original email.

Thanks for your time,

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