We recently moved/upgraded our MONyog from 3.65 to 4.02; we also switched from a Windows server to a Linux server. Upon moving to the new server, it appears that the mail alerts do not seem to be working. When I click “Test Settings”, I just get a pop-up that says “Sending Failed”.
There's no information in the MONyog logs either. Is there anywhere else I can look for errors, or some other configuration that I may be missing? Thanks.