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Re: [TowerTalk] Attn all comcast subscribers

To: "Steve Meuse" <>
Subject: Re: [TowerTalk] Attn all comcast subscribers
From: "Richard (Rick) Karlquist" <>
Date: Fri, 8 Sep 2006 09:33:18 -0700
List-post: <>
Comcast did not block this port until last month.
Then, without announcing it, they started blocking
it.  I wasted a couple of hours trying to figure
out why I couldn't send mail all of a sudden.

Of course my ISP provides an alternate port.

Rick N6RK

> -----Original Message-----
> From: Steve Meuse []
> Sent: Friday, September 08, 2006 9:08 AM
> To: Rick Karlquist
> Cc:;
> Subject: Re: [TowerTalk] Attn all comcast subscribers
> Rick Karlquist expunged (
> > 
> > One more thing:  another dumb thing Comcast does is block the default
> > port used to send mail via your other ISP.  You need to select
> > an alternate port.  Make sure your ISP supports this.
> Blocking port 25 outbound is a *very* good thing. This prevents 
> subscribers who have trojan spam bots on their machines from 
> spamming the rest of the world. 
> If you have an alternate mail provider that has any clue of what 
> they are doing, they are using authenticated SMTP, which 
> typically is not run on port 25. 
> -Steve

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