Having some issues with my Exchange Server 2003 which is installed in a SBS2003 environment.
Have an untangle gateway in between.
At present cannot send or receive external emails... internal works fine.
Error number on returned emails is 4.4.7
Things tried so far -
Reboot stopped services restarted, checked error logs nothing conclusive.
Have used Exchange analyser and corrected a critical error relating to memory size, couple of non-critical errors.
MXtoolbox test - SMTP times out
Tried telnet test as per
Makes it to the end and then says "Message in que for delivery"
Mail just sits in the Exchange Server que until it eventually gives up.
Things that have changed for possible causes
- My Server froze and I had to hard reboot... also not sure if related maybe just bad timing, some software upgrades took place that eveing at our local exchange not sure if this could have anything to do with Reverse lookup.
Firewall on Netgear router allows for port 25 incoming and outgoing with Windows firewall turned off.
Run out of ideas assuming it is SMTP or DNS issue can use internet fine (Still a novice on exchange) HELP required please !!!