I did not setup this Exchange 2003 server, but I did setup the APC UPS'. They used to email me whenever the power went out, brown out, etc. and out of nowhere they stopped (when I'm not exactly sure because I only received messages during blackouts or brownouts and noticed it stopped on the last blackout). When I setup the APC's, all I had to do was put in the Exchange server IP and a "From" email address and it worked fine for several months.
I suspect that this is due to some changes (maybe updates?) to the Exchange Server but I haven't been able to pinpoint it.
The reason I suspect the Exchange Server is that nothing changed in the APC UPS' (we have two and neither one of them work and stopped working at the same time I think-just have a generic "Email message failed" in the log) and we implemented a new feature in our Mitel phone system that emails us our voice messages in WAV format. So far we have not been able to get it to work at all.
The phone company has been out here 3 times trying to fix it but they know nothing of Exchange 2003. They keep telling me that Exchange needs to be set to accept anonymous email, which I'm assuming they are talking about relaying. I allowed relaying in the ESM from the Mitel system's IP and also the APC IP's (even though this was not done before), but it still doesn't work. The Mitel log is also very generic and just says "email failed" or occasionally "socket error."
Any help would be greatly appreciated.