==== Required information ====
- iRedMail version: 0.8.5
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MS Server 2k8 Active Directory
- Linux/BSD distribution name and version: Ubuntu 12.04
- Related log if you're reporting an issue:
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I'm deploying a new Exchange server. The spam filtering in my iRedMail/SOGo server is very well dialled in and I don't feel like losing that. I want to set my iRed box to act as an SMTP filter for my Exchange server. Is there a simple way to tell postfix/SOGo/iRed to forward all incoming mail to the Exchange box?