comcast, port 25, and postfix?

[Robert Nichols]

Tom Horsley wrote:
> On Thu, 14 May 2009 08:34:58 -0400
> David wrote:
> 
>> Comcast stopped using port 25 for their smtp and not uses port 587. And
>> they did say it was to do as suggested. To stop spam relays.
> 
> I'm not saying its a bad idea, I'm just trying to figure out the
> source of the ominous message about them detecting port 25 activity
> on my cablemodem. Why not just come out with a nice straightforward
> message saying "Hey, there is too much spam relaying, we're gonna block
> port 25 everywhere".
> 
> But if there is some weird fedora app sitting in cron and trying to
> use port 25 every once in a while, I'm now determined to find it! :-).
> (Just to keep this on topic for fedora list).

Comcast is well known for having a hair trigger for blocking port 25,
and that same ominous message is always sent.  I got one more than a
year after I had stopped using port 25 and blocked it in the firewall
in the machine that is the gateway from the rest of my network to the
Internet.

-- 
Bob Nichols     "NOSPAM" is really part of my email address.
                 Do NOT delete it.