21st June 13:15
Postfix and Exchange 2003
Thank you for posting here.
Based on your description, I understand you use Postfix as gateway to
distribute mails based on the SMTP address: @westE55.company.com or @
eastE55.company.com. Now I can understand you join an Exchange Server 2003
into East coast Site, and host new SMTP address @
According to my knowledge, we could create a Recipient Policy to host SMTP
address eastE2K3.corp.company.com by the instruction in the article below.
317298 XADM: How to Create E-Mail Addresses Based on Recipient Policies
After creating Recipient Policy, I think you need to associate SMTP address
eastE2K3.corp.company.com with new Exchange Server 2003 by FQDN or IP
address in Postfix gateway. Please understand Postfix is provided by a
manufacturer independent of Microsoft. Therefore, we cannot guarantee their
performance and reliability. For more information and further suggestions
about configuring Postfix Server, I am afraid that you may need to contact
If there is anything I can do regarding Exchange Server, feel free to let
me know. Thanks and have a nice day!
Thanks & Regards,
Microsoft Online Partner Support
Get Secure! - http://www.microsoft.com/security
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| Subject: Postfix and Exchange 2003
| From: "MR-KEN" <email@example.com>
| Date: Tue, 16 Nov 2004 14:40:16 GMT
| X-Newsreader: News Rover 8.2.2 (http://www.NewsRover.com)
| Message-ID: <OFG1wo#yEHA.3908@TK2MSFTNGP12.phx.gbl>
| Newsgroups: microsoft.public.exchange.setup
| NNTP-Posting-Host: webmail.cayman.com 18.104.22.168
| Lines: 1
| Xref: cpmsftngxa10.phx.gbl microsoft.public.exchange.setup:119220
| X-Tomcat-NG: microsoft.public.exchange.setup
| We are converting from E55 to E2K3.
| We have two sites, each with one E55 located on the East and West coast.
| The E55 servers are in a domain company.com, while the entire company (as
| well as the new E2K3 server) is in the domain corp.company.com.
| We have Postfix on the West coast, which via the alias list, points e-mail
| to either the host on the West coast or the host on the East coast. For
| example, and entry in the alias file would read:
| With E2K3 no joined to the East coast Site, I would like to start routing
| the e-mails to it and not to the E55's IMC.
| To get this to work (and it does work), is to change the alias list to:
| And to make that same change to the user account alias in AD.
| The dilemma is that I see a possible problem pointing the mail to the E2K3
| FQDN (it even warns about this in the E2K3 do***entation. During
| also noticed that if I made the change on Postfix, but not to the user
| account, it would create a loop back.
| MX records are kind of out of the question, as we want the Postfix to
| deliver directly to the host. I also understand that there may be a way
| have postfix query AD.
| However, to keep things simple, does anyone have another route or idea on
| Best Practices for this?
| Thanks so much!