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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
Hi All,
I'm experiencing the same problem. No personal IMAP or POP3 accounts work, even though the SSL and TLS certificates are fine.
This is a very big problem. If Apple doesn't fix it quickly, I might go back to iOS 17 or switch to another brand.
I believe that for Apple and its development team, it should be quite simple to fix an issue like this, and I find it very concerning that a solution hasn't been provided yet. After all, what complex code could be behind a function you've been implementing for over 10 years? I strongly urge you to resolve this quickly, or many of us will be forced to leave a platform that has so far been both reliable and secure.
Thank you.
I am unable to download AOL Mail since 18.1 downloaded - am getting ‘NETWORK ERROR POSIX 50’ message!
This problem magically disappeared for me a couple days ago. Apple must have fixed something on the back end because I didn't do any OS changes or app upgrades or settings changes.
My email error is slightly different for my yahoo account…(POSIX50). It is frustrating, but it clears after a minute or two. But, it does pop up multiple times, daily.
I am finding that it is now intermittent, sometimes email downloads sometimes not, rather hit & miss, hope it is sorted out soon!!
Mine started downloading again after I switched off McAfee VPN.
Unfortunately nothing to report. They keep calling me off and on but looks like the engineering team is not prepared to accept it as a bug. Might help if more people raise cases with Apple.
If you are running a VPN turn it off.
If you had of mentioned it was a Outlook account the two suggestions I make, is 1. You reenter it using the Exchange option and if that doesn't work, then I usually suggest you download the Outlook app on the App Store.
After I installed OIS18 on iPhone I’ve had this problem with getting BT mail with the POSIX 96 network error message. However after deleting and reinstalling my email account, it’s working again. However the same email client had no issue whatsoever with my G Mail account !
As per my understanding POSIX 96 error is related to your server side error. Also based on your issue explanation, your mail server might be having session handling/holding issues. Check your IMAP/POP3 server error log or run your IMAP/POP3 server in debug mode to get more information.
I get POSIX 61 on BTinternet. This is a huge issue, we carry our phones with us and they are also authentication devices be it via MFA, text or MAIL - this is a big problem since updating to iOS 18.0.1 which I installed yesterday and have since had this issue.
Apple - is there a fix coming soon please?
mangalapandi wrote:
This may not be the Mail App issue, When i got new iPhone with iOS18, i got the same issue after the migration and even i deleted the account and recreated in Mail app, it did not worked. Then i have checked my server about the dovecot error log and i noticed that its had issue in keeping the authentication session and i fixed it, then Mail app started getting message and its not showed any error related to POSIX 96 till now.
This is very significant, and probably the most useful post I have seen respecting this problem! But, how did you fix it?!?
This means, ironically, apples own (discontinued) server software also won't work with iOS 18 because it runs dovecot.
mangalapandi wrote:
I have plan to reproduce this error in my server maintenance time. if i am able to reproduce it, i will update about the specific protocol error that may help apple/others to fix the issue.
But you indicated earlier that you fixed it on your dovecot server. What did you do?
mangalapandi wrote:
There are 2 error i have notice in my dovecot setup while my iPhone Mail app given POSIX 96 error...
I will have a look at my logs as soon as I have a chance. Thanks very much for your useful information and offer to help.
mangalapandi wrote:
There are 2 error i have notice in my dovecot setup while my iPhone Mail app given POSIX 96 error.
…
May be i can help you to fix if you share the truncated logs while accessing Mail app to your server.
I saw nothing interesting in IMAP logs on dovecot server. I see the login with no error, and no errors following.
Not set to debug, but I think it will be less effort to wait until Apple fixes iOS mail.
Thanks for the offer of help.
Error in downloading mail on IMAP after ios 18 upgrade
