IMAP is again broken... this has happened with many prior iOS betas
IOS 17 Beta 2 unable to fetch IMAP mail
Just tried the 18.1 beta 4, acts the same, so not fixed yet.
Feedback generated: FB15168540. Referenced the earlier FB13825638, but I can't see that report myself).
It's not just self-signed certs. I switched to a "Let's Encrypt" cert which only has my domain name in it (and not the name of the mail server). So Mac and iOS still need to "trust" the cert because of the name mismatch. This works on Macs and on iOS 17 devices, but not on iOS 18. So I think it's any cert that needs to be "trusted." I updated my ticket with this info.
Managed to generate a cert with my full server name, and now Mail works on the beta. So it appears that any certificate that must be "trusted" will fail.
Updated the ticket with this info.
Same problem here. IMAP certificate is broken, iOS18, beta releases and final release. I don't know what to do....
Hello, somehow, self-signed certificates don't work anymore (even though they could be trusted before and most likely adhere to the requirements).
I was able to provide MDM payload with a Step-CA root certificate, it's intermediate certificate and the signed certificate of the mailserver - it seems to be important that the chain of trust be completely working, including working DNS and alt name of the host.