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 (
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
Also, emails originate outside server sitting at chihost. That is where the PHP executes.
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?