Okay, that makes sense now, thanks for explaining that. So I guess what I'm trying to do will actually work. I should just try it out and see for myself.
Scott Smith Network Administrator 248.489.1999 [EMAIL PROTECTED] Westside & Detroit Reprographics An ARC Company ------------------------------------------------- ----- Original Message ----- From: "MIS Dept" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Wednesday, June 01, 2005 4:44 PM Subject: Re: [IMail Forum] SMTP gateway At 12:58 PM 6/1/2005, you wrote: I didn't really want this to become so complicated - this is all I'm asking right now: If I have IIS set for Incoming on port 25 and outgoing on port 1025, and I have Imail set for port 1025, how am I supposed to get email sent back out to the outside world? With such a setup, wouldn't both my SMTP services be sending mail out on port 1025? Scott Smith I think your confusion is about the terminology. When we're talking about inbound or outbound port of a gateway or a server these terms are referring to different physical locations. Imail will use port 1025 to receive all inbound messages from the gateway but when Imail is about to send a message to the outside world, it will look for port 25 on that outside SMTP server to communicate to by using ANY available port on the Imail server from up to the pool of around port# 65000. You can see this to yourself by doing nbtstat -a at the command prompt on the Imail server. Inbound port 25 of an SMTP gateway means, that this gateway is waiting for incoming messages on port 25. Outbound port 1025 of the same gateway means, that when the gateway wants to forward a message to Imail server, it will look for port 1025 on the Imail server, but it will use ANY available port on the gateway itself to do so. Similarly on the Imail server: Imail server is waiting for any INCOMING messages on port 1025, but when it wants to send/forward a message from a client to a 3rd party email server, it will look for port 25 on that 3rd party server by using ANY available port on the Imail server itself. Geza To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/ To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
