I have a Windows 2003 Server running Active Directory and Exchange 2003. All of our Outlook clients are working just fine. All of our Entourage clients were working just fine until I implemented the changes in the following Microsoft KB Article: http://support.microsoft.com/kb/270836. Basically, the article guides you through assigning static ports for Exchange to listen on. I configured the ports to 1433,1434,1435,1436, and 1437. (This change was required for our VPN clients).
Since making this change, however, our Entourage clients are no longer able to receive mail. They immediately pop up the message "Mail could not be received at this time." "A connection failure has occurred." Error 3280.
I set up a packet capture on the Exchange server and watched the traffic for an Entourage client and an Outlook client. The Outlook client is communicating over ports 1435 and 1437. The Entourage client was attempting to communicate over the default IMAP port 143 and was being refused connection.
So, I went into the Entourage client under the Advanced Receive Options and chose to override the default IMAP port and I set it to 1435. Now, when I do a Send/Receive, the client just sits there working and working, but never downloads any mail. I have also tried setting the port to 1437 with the same result. Attempting to use the other ports 1433, 1434, and 1436 get me the original connection error.
So, how do I get Entourage to work the same way my Outlook clients work? I did not have to change anything in Outlook for it to work properly. Any and all help is greatly appreciated!
Since making this change, however, our Entourage clients are no longer able to receive mail. They immediately pop up the message "Mail could not be received at this time." "A connection failure has occurred." Error 3280.
I set up a packet capture on the Exchange server and watched the traffic for an Entourage client and an Outlook client. The Outlook client is communicating over ports 1435 and 1437. The Entourage client was attempting to communicate over the default IMAP port 143 and was being refused connection.
So, I went into the Entourage client under the Advanced Receive Options and chose to override the default IMAP port and I set it to 1435. Now, when I do a Send/Receive, the client just sits there working and working, but never downloads any mail. I have also tried setting the port to 1437 with the same result. Attempting to use the other ports 1433, 1434, and 1436 get me the original connection error.
So, how do I get Entourage to work the same way my Outlook clients work? I did not have to change anything in Outlook for it to work properly. Any and all help is greatly appreciated!