New domain name email problem

Kenneth Burgener kenneth at
Sun Dec 11 01:00:51 MST 2005

Mitch Anderson wrote:
> I could be wrong, but I believe comcast blocks incomming (from outside 
> networks) port 25 connections, in an attempt to prevent spam, and rogue 
> machines from becomming open relaying spam machines.  I can telnet to 
> your box, but would explain why your comcast(their mail servers are not 
> on the same networks as their cable customers), and gmail fail.  It 
> would seem like they're trying to connect to your secondary mail server
>  Which doesn't appear to be setup to relay 
> mail to Nor would it be able to even if it was... just a 
> thought.  Like I said previously... my assumption that comcast blocks 
> incomming port 25 could be wrong.  Would need to see the full email 
> headers to tell for sure.
> Mitch


If Comcast blocked port 25 then no other computer would be able to send 
email to the Comcast network.  Do you mean they block port 25 to Comcast 
customers?  I have 4 other domains all pointed to that same server, and 
mail comes to them fine, in fact this email here will be sent to this 
very server.

If they were to connect to the secondary (my 
backup email server), it should relay the mail to my primary mail 
server.  I have tested this manually and I am able to receive email 
there from as well, even from

The full headers from the Comcast bounced email are as follows:


 From - Sun Dec 11 00:26:09 2005
X-Account-Key: account2
X-UIDL: UID448-1133157644
X-Mozilla-Status: 0001
X-Mozilla-Status2: 10000000
Return-Path: <>
X-Original-To: kenneth_uvlug at
Delivered-To: kenneth_uvlug at
Received: by (Postfix, from userid 1001)
	id 41FC68AC39; Sun, 11 Dec 2005 00:25:04 -0700 (MST)
Received: from ( [])
	by (Postfix) with ESMTP id 719E58AC37
	for <uvlug at>; Sun, 11 Dec 2005 00:25:03 -0700 (MST)
Received: from localhost (localhost [])
	by (Postfix) with ESMTP id 1D0AA1D103
	for <uvlug at>; Sun, 11 Dec 2005 00:24:53 -0700 (MST)
Received: from ([])
  by localhost (uvlug []) (amavisd-new, port 10024) with ESMTP
  id 28516-07 for <uvlug at>;
  Sun, 11 Dec 2005 00:24:42 -0700 (MST)
Received: from (unknown [])
	by (Postfix) with ESMTP id 4EC2E1CFDA
	for <kenneth at>; Sun, 11 Dec 2005 00:24:40 -0700 (MST)
Received: from (localhost[])
           by (rwcrmhc13) with ESMTP
           id <200512110724270150043otme>; Sun, 11 Dec 2005 07:24:27 +0000
From: Mail Delivery Subsystem <mailer-daemon at>
Subject: Returned mail: delivery problems encountered
Message-Id: <2005121107242701500at500e at A@000000000000 at>
Date: 11 Dec 2005  7:24:27 +0000
To: <kenneth at>
Mime-Version: 1.0
Content-Type: multipart/report; report-type=delivery-status; 
X-Spam-Checker-Version: SpamAssassin 3.0.3 (2005-04-27) on
X-Spam-Status: No, score=0.2 required=4.0 tests=AWL,FORGED_RCVD_HELO,
	INVALID_DATE autolearn=no version=3.0.3
Content-Type: text/plain

A message (from <kenneth at>) was received at 11 Dec 2005 
7:24:25 +0000.

The following addresses had delivery problems:

<test at>
	Permanent Failure: 554_<test at>:_Relay_access_denied
	Delivery last attempted at Sun, 11 Dec 2005 07:24:25 -0000
Content-Type: message/delivery-status

Reporting-MTA: dns;
Arrival-Date: 11 Dec 2005  7:24:25 +0000

Final-Recipient: rfc822; <test at>
Action: failed
Status: 5.0.0 554_<test at>:_Relay_access_denied
Diagnostic-Code: smtp; Permanent Failure: Other undefined Status
Last-Attempt-Date: Sun, 11 Dec 2005 07:24:25 -0000
Content-Type: message/rfc822

Received: from [] 
           by (rwcrmhc13) with ESMTP
           id <20051211072425015004t4s2e>; Sun, 11 Dec 2005 07:24:25 +0000
Message-ID: <439BD42C.5020602 at>
Date: Sun, 11 Dec 2005 00:24:28 -0700
From: Kenneth Burgener <kenneth at>
User-Agent: Mozilla Thunderbird 1.0.7 (Windows/20050923)
X-Accept-Language: en-us, en
MIME-Version: 1.0
To:  test at
Subject: test
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit



Thanks for your help,

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