Apple doesn’t care man! Embarrassing that you have to install a Microsoft product on your iPhone because the native Apple mail program has a bug that Apple doesn’t want to fix it. I have 4 imap accounts that are set up identical to the one account that’s having a problem. I’ve tried all of the suggested solutions found on the forums and none of them work if I delete the account and re-add it I’ll get mail flowing for about a couple minutes and then it instantly fails again. #sad

Hey NullGazonk, Can you outline where you generated the server certificate with SAN (Subject Alternative Name) records and where you installed it? Much appreciated and I have also wasted a few days worth of repeating the same things over and over.. Not Apple'esqe