IIS and SMTP - Can't bind on port 25 with two IP's

Author

Can't bind on port 25 with two IP's

Mustu

2006-03-27, 9:04 am

Hi

I am having two IIS virtual SMTP servers both binding on separate IP's. A
third party mailserver (Workgroup Mail) is bound to the first IP (e.g.
192.168.0.1 on port 25). My first SMTP virtual server is bound to the same
IP with a different port number. Works fine.

When i try to bind the second virtual SMTP server on the second IP (e.g.
192.168.0.2 on port 25) it refuses to start. Logs an event in the system log
saying the service could not bind to instance 2.

I should be able to bind two different services on the same port no. as long
as they are on different IP addresses right ?... What am i missing here.

Regards,
-Mustu