We have a Mitel 5000 installed in 2014 and it's been pretty flawless until last month. Suddenly we were not getting voicemail sent to email except maybe 5% of the time. (Forward & Copy - they go to the phone as well). We'd get a message come through once in a while, like 1 in 10 or 20. We were using an Office365 email account which is also used with other devices that send email alerts at our site, and those systems continue to send mail without issue.
For testing, I setup a gmail account just for the Mitel, and the result is the same, it works only 5-10% of the time. I've been over the Email Gateway settings 100 times. (If it was an incorrect setting, it wouldn't work at all). There's no pattern, time, or any consistent thing I can pin down as to why this is suddenly an issue.
1) Where can I find the logs in the Mitel that would show email sending activity?
2) Does anyone have any guess what the issue could be?
When I ping the Mitel from the internal LAN I get a constant, steady stream of replies, so I don't believe it's an intermittent connection issue.