[13005] in cryptography@c2.net mail archive
Re: Swiss ISPs Required to Log and Store Email for Six Months
daemon@ATHENA.MIT.EDU (Pete Chown)
Thu Apr 10 11:06:51 2003
X-Original-To: cryptography@wasabisystems.com
X-Original-To: cryptography@wasabisystems.com
Date: Wed, 09 Apr 2003 21:15:39 +0100
From: Pete Chown <Pete.Chown@skygate.co.uk>
To: cryptography@wasabisystems.com
Cc: cypherpunks@lne.com
In-Reply-To: <Pine.LNX.4.33.0304091931000.1934-100000@Zeta>
Thomas Shaddack wrote:
> SMTP servers, if they have to receive mails, HAVE to listen on port 25.
> There is no way in the standard how to tell that SMTP on
> whateverserver.com listens in port 1234 instead.
Incidentally, this is not true for SRV records. In some ways, SRV is
like MX, but it does a lot more. One of the new features is that you
can specify a port. Unfortunately SRV is not widely used as yet.
This may have positive implications for privacy, and negative
implications for firewalls that do egress filtering.
--
Pete
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