My Server has 4 IP addresses.
(IPs are for example only) 1.2.3.4 1.2.3.5 1.2.3.6 1.2.3.7
Under IIS, I have a Virtual SMTP Server on 1.2.3.5, on port 25. The virtual server installed there at the start on 1.2.3.4 is disabled.
1.2.3.5 is mapped to my hostname, mailhost.mydomain.com and the rDNS PTR is configured for that as well.
When I send an Email using mailhost.mydomain.com - it works, but it shows up in headers that the email is coming from 1.2.3.4 with no reference to 1.2.3.5 at all.
Any ideas?
Cheers