I have an Exchange 2003 server behind a firewall. The untrust side of my firewall resolves to mail.mydomainname.com when a reverse DNS lookup is performed. When Sending email and looking in to the headers, some receiving email servers place a (May be forged) note to the Received from line.
My server tags the outbound emails as myservername.mydomainname.com which is different from the resolution of the sending IP address mail.mydomainname.com
Received: from Myservername.mydomainname.COM (mail.mydomainname.com [xxx.xxx.xxx.65] (may be forged))
What happens if I change the name of and Exchange 2003 server? Will it keep working normally? or is ist a big risk to do that. My rational behind that is that if I change the name to mail then the LAN and WAN tags in my outbound emails will match and hopefully resolve my "may be forged" problem) some sites reject my emails and some let them through with the mentioned tag line
What can I do to resolve the issue with out changing the name of my server?