We're running Postfix on our DMZ to receive incoming email which it then forwards to our internal Exchange server. Exchange sends e-mails directly to the internet via SMTP virtual server. The MX ...

I'm looking for a way to set up an equivalent to Exchange Shadow Redundancy, as documented here http://technet.microsoft.com/en-us/library/dd351027(v=exchg.150).aspx ...

This tutorial explains how to use a recipe of Davmail, Fetchmail, Postfix, and Courier IMAP to interface standards-based e-mail clients with Exchange’s Outlook Web Access, and to integrate corporate ...