nanog mailing list archives

Re: Outgoing SMTP Servers


From: Mikael Abrahamsson <swmike () swm pp se>
Date: Tue, 25 Oct 2011 07:27:43 +0200 (CEST)

On Mon, 24 Oct 2011, Dennis Burgess wrote:

I am curious about what network operators are doing with outbound SMTP
traffic.

Block all TCP/25 and require users to use submit with authentication on TCP/587.

--
Mikael Abrahamsson    email: swmike () swm pp se


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