Solved

Exchange 2003 on SBS 2003 - Stopping 3rd Party Spam Filtering - Restoring Inbound SMTP

Posted on 2013-02-05
4
29 Views
Last Modified: 2016-07-01
Hello,

An Exchange server (Exchange 2003 on SBS 2003) that I administer will be discontinuing 3rd Party Spam Filtering (Like GFI, Postini).

In my tests of changing the MX record, I have not been successful in getting inbound email to be restored, to come through. Last year, before using a 3rd party spam filter inbound mail worked swell.

MX was:
10 abccompany.com.pri-mx.smtproutes.com     (1/2hour - for testing)

MX for testing:
10 mail.abccompany.com     (1/2hour - for testing)

So when I remove "abccompany.com.pri-mx.smtproutes.com" no mail flows through Exchange, all users are affected.
When "abccompany.com.pri-mx.smtproutes.com" is in place mail flows fine.

mail.abccompany.com resolves correctly to the static IP for the router and TCP Port 25 forwards from the router to Exchange 2003 on SBS 2003 IP o.k. Port 25 is open on the Windows firewall.

My thought is that there is something in Exchange impeding the inbound mail flow.
The only settings I am aware of affecting the 3rd party spam filtering are:
1. SMTP Connector, Access, Connection and Relay, allowing *.smtproutes.com

Any thoughts?

Sean
0
Comment
Question by:SeanRoss
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
4 Comments
 
LVL 76

Accepted Solution

by:
Alan Hardisty earned 500 total points
ID: 38857776
Check the setting on your Default SMTP Virtual Server> Access Tab> Connection Control Button - make sure that it is set to All Except The List Below.  When using a 3rd party Spam Filtering Service, only specific IP's will be configured to allow just the spam filtering providers mail servers to connect.

Alan
0
 
LVL 76

Expert Comment

by:Alan Hardisty
ID: 41684728
My comment https:#a38857776 should have happily resolved the problem.

Alan
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

How to resolve IMCEAEX NDRs in Exchange or Exchange Online related to invalid X500 addresses.
This article will help to fix the below error for MS Exchange server 2010 I. Out Of office not working II. Certificate error "name on the security certificate is invalid or does not match the name of the site" III. Make Internal URLs and External…
This video demonstrates how to sync Microsoft Exchange Public Folders with smartphones using CodeTwo Exchange Sync and Exchange ActiveSync. To learn more about CodeTwo Exchange Sync and download the free trial, go to: http://www.codetwo.com/excha…
There are cases when e.g. an IT administrator wants to have full access and view into selected mailboxes on Exchange server, directly from his own email account in Outlook or Outlook Web Access. This proves useful when for example administrator want…

691 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question