I have been noticing a slow degradation of relay email services from our Exchange 2010 server, seemingly beginning in August 2013 and now resulting in our organization not receiving incoming faxes to our Public shared faxes folder. Early signs were that I stopped receiving email alerts from the antivirus server and the temperature sensor in the server room in August. Then, in September, users started reporting that they could only scan and email a few pages to themselves at a time without getting a "network error". But they could email fewer pages, which lead me to believe that it was a file size restriction issue. We never had that size restriction on internal relay scan to email (or even just internal emails) before. As of yesterday, late November, we are not receiving incoming faxes to our Exchange public folders where they have gone since before I started here over 4 years ago. The Exchange server settings have not been changed. I may need to create a MS support incident, but thought I would ask you all first.
Thanks and Happy Thanksgiving!