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Date: Sun, 28 Apr 2013 04:29:15 +0200
From: Bernt Hansson <bah@bananmonarki.se>
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To: doug@safeport.com
Subject: Re: Sendmail  8.14.5/8.14.5 on fbsd-9.1R (EC2)
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2013-04-27 18:43, doug skrev:
>
> If sendmail is listening on port 587, it will relay for any valid sender
> who can reach that port.

Only if it is listed in /etc/mail/access file.