Re: Dovecot 2.4.5 on macOS 27 ARM64: post-authentication IMAP connection closes
I was able to replicate this (or something very similar) on MacOS 15/intel.
In my case, if I connect over imap things work, but over imaps the imap process dies with signal 6 (built against openssl 3.6.5). I spent a little time in lldb but wasn't able to isolate what was happening. I didn't see any interesting logs from dovecot (just looked like client disconnected after sending 0 commands).
-- Daniel J. Luke
Hi Daniel!
In my case, if I connect over imap things work, but over imaps the imap process dies
We're on Dovecot 2.3 and can't get IMAPS to work on new iPhones / recent iOS versions. If the mail account was set up on an old iOS version, it continues to work even on latest iOS versions. But we cannot onboard new users on new iOS devices.
We use IMAPS only. Unencrypted IMAP is entirely disabled due to EU GDPR. Maybe the problem is related? (IMAPS vs. Apple?)
Our certificate (chain) is fine. It works flawlessly on Thunderbird (Windows and Linux), MS Outlook (Windows) and K9Mail/Thunderbird (Android) without security warnings etc.
The problem exists only with modern iOS devices and the default iOS Mail App.
Our workaround is buying Android phones only.
Reg
My work around was to use Exchange Active Sync (EAS) and z-push only IMAP enabled on the server, works with 2.3 and 2.4.
Horst
Sent from my iPhone
On 12 Oct 2026, at 13:43, Reg Barclay via dovecot <dovecot@dovecot.org> wrote:
Hi Daniel!
In my case, if I connect over imap things work, but over imaps the imap process dies
We're on Dovecot 2.3 and can't get IMAPS to work on new iPhones / recent iOS versions. If the mail account was set up on an old iOS version, it continues to work even on latest iOS versions. But we cannot onboard new users on new iOS devices.
We use IMAPS only. Unencrypted IMAP is entirely disabled due to EU GDPR. Maybe the problem is related? (IMAPS vs. Apple?)
Our certificate (chain) is fine. It works flawlessly on Thunderbird (Windows and Linux), MS Outlook (Windows) and K9Mail/Thunderbird (Android) without security warnings etc.
The problem exists only with modern iOS devices and the default iOS Mail App.
Our workaround is buying Android phones only.
Reg
dovecot mailing list -- dovecot@dovecot.org To unsubscribe send an email to dovecot-leave@dovecot.org
"horst" == horst simon2--- via dovecot <dovecot@dovecot.org> writes:
Care to explain this in more detail? I'm sure more people will be running into this problem...
My work around was to use Exchange Active Sync (EAS) and z-push only IMAP enabled on the server, works with 2.3 and 2.4. Horst
Sent from my iPhone
On 12 Oct 2026, at 13:43, Reg Barclay via dovecot <dovecot@dovecot.org> wrote:
Hi Daniel!
In my case, if I connect over imap things work, but over imaps the imap process dies
We're on Dovecot 2.3 and can't get IMAPS to work on new iPhones / recent iOS versions. If the mail account was set up on an old iOS version, it continues to work even on latest iOS versions. But we cannot onboard new users on new iOS devices.
We use IMAPS only. Unencrypted IMAP is entirely disabled due to EU GDPR. Maybe the problem is related? (IMAPS vs. Apple?)
Our certificate (chain) is fine. It works flawlessly on Thunderbird (Windows and Linux), MS Outlook (Windows) and K9Mail/Thunderbird (Android) without security warnings etc.
The problem exists only with modern iOS devices and the default iOS Mail App.
Our workaround is buying Android phones only.
Reg
dovecot mailing list -- dovecot@dovecot.org To unsubscribe send an email to dovecot-leave@dovecot.org
dovecot mailing list -- dovecot@dovecot.org To unsubscribe send an email to dovecot-leave@dovecot.org
participants (4)
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Daniel J. Luke
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horst.simon2＠icloud.com
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John Stoffel
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Reg Barclay