OK, here is the scenario: We use untangle V9 for our firewall, gateway, filter, etc, and it works well. No problems with email whatsoever. Unfortunately, V9 is now past end of life, so we have the new NG server ready to go. Same IP, same everything. Put the NG in place, incoming email works, internal email works, outbound email all gets bounced back by the 2010 server that permission is denied. Went through an uninstalled everything on NG. No change. Internet works, remote access works, everything is good except outbound. Set a rule to bypass all traffic from the exchange server IP - no change. All modules are disabled on NG - no change. The NG is basically just a coupler at this point between our network and the t1 router, but the NG seems to have taken a "You Shall Not Pass" attitude. Pull the NG, put v9 back online, everything works fine. Untangle has spent a week with me trying to troubleshoot this, and came back tonight with a "this is an exchange problem, not our firewall, and we do not support exchange. Good luck and have a nice day."
The exact error message is "mail.mydomainname.com gave this error: Unable to relay. Your message wasn't delivered due to a permission or security issue. It may have been rejected by a moderator, the address may only accept email from certain senders, or another restriction may be preventing delivery."
We are not using moderators. The address I am currently testing with is my outside email address, which has no sender restrictions, and as mentioned above, if I put the old V9 firewall back in place, it sends fine. Put the NG in place, and this is all I get on outbounds. And yes, I am sure I have my inbound and outbound cables correct.
I REALLY want to continue using Untangle, but apparently Exchange doesn't like something, and they are sure its a setting on my exchange server.
We are not using a smart host. Outbound is by DNS. The Untangle is our gateway, and the gateway address is the same as its always been. Its a single exchange server setup, all functions contained in the one box. No weird or awkward setups that I can see, anyway. Pretty basic setup
If in fact this could be an Exchange issue, where do I start? The NG does offer a lot of advantages, IF I can make it work. Any ideas or help would be greatly appreciated!!