comcast blocking smtp25

[jack at coats.org (Jack Coats)]

I found at one time many rejections were because there was not the proper 
reverse DNS entry made so when a message is sent the senders domain needs to 
match the IP address it was sent from.  And yes, this lookup really happens 
on the receiving side, not the sending side.

-- 
*NIX is User Friendly ... It is just picky about who its friends are!

---------- Original Message -----------
From: Jerry Feldman <gaf at blu.org>
To: discuss at blu.org
Sent: Fri, 15 Jul 2005 06:38:27 -0400
Subject: Re: comcast blocking smtp25

> --Signature_Fri__15_Jul_2005_06_38_27_-0400_mDFycIe2zDqEE4.q
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> On Thu, 14 Jul 2005 23:48:09 -0400
> David Hummel <dhml at comcast.net> wrote:
> 
> > Right, starting with the whole AOL fiasco a while back.  Nonetheless,
> > Comcast does selectively block SMTP out, which is even worse.  I don't
> > see any reason not to use the smart host, which solves both problems.
> It's not that comcast blocks port 25, it does not, many recipients,
> such as AOL will reject Comcast dynaic addresses causing you to use
> another SMTP host.
> 
> --=20
> Jerry Feldman <gaf at blu.org>
> Boston Linux and Unix user group
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------- End of Original Message -------