Thanks to the tip from Martin I found the following article for Mail Essentials
http://support.gfi.com/manuals/en/me56/step3.ifinstallingonmailservermachine .changemailserverport..htm (I'm using Mail Monitor though) -----Original Message----- From: Benjamin Zachary [mailto:[EMAIL PROTECTED]] >From my memory if you run exchange 5.0/5.5 with mail essentials, ME needs to be on a different computer. It will only run on e2k/mail essentials. This was due to the port listeners etc etc.. I don't know about mail marshall. -----Original Message----- From: Ryan Gorman [mailto:[EMAIL PROTECTED]] Martin's answer appears to be the correct one. Background: I was asked to look at Mail Monitor for SMTP from Sophos. MM ran on the Exchange box and listened to port 25 and forwarded all mail to E2K on the same box but listening to port 2500. </snip> ________________________________________________________________________ This e-mail has been scanned for all viruses by Star Internet. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk ________________________________________________________________________ List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm