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Error in downloading mail on IMAP after ios 18 upgrade

I am unable to download my mail using the native mail app after upgrading to IOS 18. I am getting the following error; “Network Error (POSIX 96)”

The mail configuration is on imap with SSL.

iPad Pro, iPadOS 18

Posted on Sep 16, 2024 10:24 PM

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Posted on Oct 15, 2024 4:36 PM

The case finally landed in Cupertino! We have a case no. and the developer are in the process of analyzing the problem and implementing a solution. It is a bug that will be fixed in one of the next releases. As soon as I have news I will post them...

123 replies

Nov 15, 2024 2:03 AM in response to Hari1975

I have the same problem with my email, French internet access supplier, Free. It’s impossible to send email: Network error: (posik 96) It’s only with IPhone on IOS 18, not before, and not with my IPad or Mac. Apple Store wasn’t able to fix the problem. And it’s impossible to change for IOS 17. Then I can’t send email with my iPhone. When Apple will fix this bug??

Nov 22, 2024 1:17 PM in response to George Johnson

I have exactly the same problem.


Tried to fix this, not sure but it might have to do with the certificates being self signed with dovecot.


Sending emails is possible in iOS18, only receiving en viewing the imap mail content is not possible in iOS18 in combination with dovecot.


I hope they fix this because this is one of the most essential functions of the device.


Nov 22, 2024 5:44 PM in response to George Johnson

I have a dovecot/postfix server as well and am using lets encrypt for ssl, and am experiencing this issue too. I do not think it's an issue with self signed certificates.


No VPN here either.


Curious, has anybody brought this up on any Dovecot mailing lists yet? Or somewhere else? I am looking at their recent archives and see nothing. I do see this mentioned on Mac Rumors forums.


I have dovecot 2.3.19.1 (9b53102964) on a stock Debian 12 system at the moment. Postfix is working fine.

Nov 23, 2024 12:47 AM in response to Hari1975

I'm not using any other server or VPN, just the mail app provided by Apple and the standard configuration on the iPhone, upgraded to 18.1.1 and the problem persists. I get mail on my PC through iCloud and that's working fine. Mail will drop on the iPhone ocasionally but does not reflect what is on the iCloud server, i.e. deleted on server shows up as unread on app...

Error in downloading mail on IMAP after ios 18 upgrade

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