[CentOS] You can't get there from here

[Chris Boyd]

On Fri, 2008-01-18 at 17:31 -0500, Rich Huff wrote:
> On Fri, 2008-01-18 at 14:11 -0700, Miark wrote:
> > Having been accomodating about it in the past, the technical
> > geniuses at Comcast have permanently blocked port 25, separating
> > me (at my home office) from my employer's e-mail server.
> > 
> > What can be done on the server side to keep Postfix listening on
> > 25 _and_ accept my connections on some other port? Is there a
> > Postfix solution? iptables maybe?
> 
> I have had similar problems with some of my hosting clients.
> We configured postfix to also listen on port 2525 as follows:

RFC 2476 defines port 587 as the preferred port.
http://www.ietf.org/rfc/rfc2476.txt