Mail not working on iPhone after iOS 18 Update

I’ve tried all the solutions without any luck. I’m planning on contacting Apple Support

Anyone interested in updating their iPhone to the new IOS update to 18.1? I'm

going to wait until I see if anyone has feedback on this. I don't want to get

burned again.

After updating iOS 18.1 (Build Number: 22B83), it works as expected.

You are very lucky. I just did the update and the problem is still there. Were (Are) there multiple bugs?

I added / a few days ago but today I’m getting my “flashing” emails for “All emails” and I’m definitely not loading 18.1.

Fix this bug Apple !!!!

Hi 
Does anyone still have the problem 
with IMAP accounts in the MAIL App, 
I can't seem to solve it?

YES!! I still have that issue.

hello195 wrote:

Hi

Does anyone still have the problem

with IMAP accounts in the MAIL App,

I can't seem to solve it?

Yes, the problem remains.

it is an iOS/ipados 18.1 bug in the mail app.

Hundreds of us>……

Same here! At least in my case I still have one mobile device I did not update to IOS 18. But, I had plans to upgrade that device this year! Going to have to wait until this bug is squashed.

Me two. None of the fixes suggested on this entire thread have worked.

Still have a problem with self signed certificate after upgrading to 18.1

Using sendmail 8.17.1 and dovecot v2.3.20

The mail client error is "Posix 50" and/or "invalid certificate format -9 808"

Delete / added the account multiple times.

Other mail clients works fine, Bluebird (IOS),stock mail MAC Airbook (Sonoma 14.6.1)

Bluebird (Fedora FC40)

here is the essential from the dovecot log (ssl debug)

Nov 07 07:18:17 imap-login: Debug: SSL: where=0x10, ret=1: before SSL initialization

Nov 07 07:18:17 imap-login: Debug: SSL: where=0x2001, ret=1: before SSL initialization

Nov 07 07:18:17 imap-login: Debug: SSL: where=0x2002, ret=-1: before SSL initialization

Nov 07 07:18:17 imap-login: Debug: SSL: where=0x2001, ret=1: before SSL initialization

Nov 07 07:18:17 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3/TLS read client hello

Nov 07 07:18:17 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3/TLS write server hello

Nov 07 07:18:17 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3/TLS write change cipher spec

Nov 07 07:18:17 imap-login: Debug: SSL: where=0x2001, ret=1: TLSv1.3 write encrypted extensions

Nov 07 07:18:17 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3/TLS write certificate

Nov 07 07:18:17 imap-login: Debug: SSL: where=0x2001, ret=1: TLSv1.3 write server certificate verify

Nov 07 07:18:17 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3/TLS write finished

Nov 07 07:18:17 imap-login: Debug: SSL: where=0x2001, ret=1: TLSv1.3 early data

Nov 07 07:18:17 imap-login: Debug: SSL: where=0x2002, ret=-1: TLSv1.3 early data

Nov 07 07:18:17 imap-login: Debug: SSL: where=0x2002, ret=-1: TLSv1.3 early data

Nov 07 07:18:17 imap-login: Debug: SSL: where=0x2002, ret=-1: TLSv1.3 early data

Nov 07 07:18:17 imap-login: Debug: SSL: where=0x2002, ret=-1: TLSv1.3 early data

Nov 07 07:18:17 imap-login: Debug: SSL alert: where=0x4004, ret=558: fatal certificate unknown

Nov 07 07:18:17 imap-login: Debug: SSL: where=0x2002, ret=-1: error

Nov 07 07:18:17 imap-login: Debug: SSL error: SSL_accept() failed: error:0A000416:SSL routines::sslv3 alert certificate unknown: SSL

alert number 46

There is no place to change the IMap

Thanks for heads up! That'll make fine addition to my bug report in Feedback app.

18.1 does not solve this issue.