Mail for OS X and MS Exchange
I'm having a problem that has me tearing my hair out. Mail 13.5.2 is not getting along with my employer's MS Exchange server. There are a number of messages that I try to delete, and they pop back up again. But they really have been deleted! They don't show up in iOS Mail or, for that matter, in Outlook. Only on my Mac. When this came up a few weeks ago, I did as complete a reset of Mail as I could, and that seemed to help for a while — but then it went back to its old, super-annoying habits. I've attached an image of the message I get. Clicking on the question mark was of no help. Thanks!