We noticed that our 3CX is not sending emails to schedule conference calls. It sends emails from 3CX smtp server but not from our account in Office 365.
We have logged into that same account and we are able to send emails. Any ideas?
Please note that this is a known issue for V15.5 SP6. This has been fixed however in V16 which is currently in Alpha. I would not recommend updating a production PBX to an Alpha release however so you can either wait for the release of V16 of use the 3CX SMTP server as your SMTP server.