The php mail function I am using does not work completely. It will sent mails to gmail easy enough. However, emails routed directly to my internally hosted exchange server are not getting through.
The servers/domains are setup is as follows.
URLs are registered with Network solutions (www.independentsservice.com
NS directs all traffic to our ISP (Socket.net). Socket directs as follows:
Mail to our local server
FTP to our local server
HTTP to our website hosted on Chihost.com
Traffic to our local server goes through a Watchguard firewall which routes mail traffic to our locally hosted Exchange server.
Is there some reason why exchange won't accept these emails?