Swiss ISPs Required to Log and Store Email for Six Months

[Pete Chown]

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