Mail not working on iPhone after iOS 18 Update

Hi guys,


After updating my iPhone from iOS 17.7 to 18, I encountered an error with my work email. It's showing "IMAP server is not responding."Our mail server uses TLS version 1.1. Does iOS 18 support this version? Can you confirm?




[Re-Titled by Moderator]

iPhone 12, iOS 18

Posted on Sep 16, 2024 10:04 PM

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Question marked as Top-ranking reply

Posted on Sep 17, 2024 8:49 PM

I’d get the server to TLSv1.2 and with forward security configured minimally, and test again.


IMAP (read, receive) and ESMTP (send) are separate network services, so check both.


There are various ways to check the TLS and cipher offers by a server, and curl and testssl among those,:


https://stackoverflow.com/questions/40557031/command-prompt-to-check-tls-version-required-by-a-host


Also check the IMAP and ESMTP server logs for any failure-relevant details that might be included there.

532 replies

Sep 22, 2024 1:39 PM in response to KiltedTim

Here

TLS 1.0 and TLS 1.1 are being deprecated due to security concerns: 

  • Security vulnerabilities
  • TLS 1.0 and TLS 1.1 are vulnerable to a number of attacks, including POODLE, BEAST, CRIME, FREAK, and LOGJAM. These attacks can compromise encrypted communications and expose valuable data. 
  • Compliance requirements
  • Many organizations, including government agencies, must meet compliance requirements that mandate the use of TLS 1.2 or higher. 
  • Evolving standards
  • Internet standards and regulatory bodies are evolving to provide improved security. 

Here are some details about the deprecation of TLS 1.0 and TLS 1.1: 

  • Windows
  • TLS 1.0 and TLS 1.1 will be disabled by default in Windows 11 Insiders Preview and Windows Server Insiders Preview releases in 2024. This change applies to both client and server devices. 
  • Azure
  • Azure will remove support for TLS 1.0 and TLS 1.1 for new and existing storage accounts by October 31, 2024. 
  • Internet Engineering Task Force (IETF)
  • The IETF officially deprecated TLS 1.0 and TLS 1.1 in March 2021. The IETF recommends that companies, government agencies, and software developers use TLS 1.2 and TLS 1.3. 


Sep 25, 2024 6:23 PM in response to surveygold

What if they don't fix it? What you gonna do? Just see how people going crazy about Mail app LOL! You can use computer and no issue and free from any of apple apps!

Oct 3, 2024 8:56 PM in response to polkamatic

I'm sure they not worry about it. In my opinion they pushing users to use they email services. I quit apple services all my account's I moved to Securityfile Mail.

Sep 23, 2024 7:11 PM in response to jdhill84

Hey, here's my advice. Set up your email account on an older iPhone like 7, 8, or 10. You don't need to install those mail apps with ads. I'm using Securityfile Mail and set it up on iPhone 8. Work's like a champ. Thank you.

Sep 28, 2024 7:32 AM in response to Hamishparker

Here some advises;

1) Delete your email on phone.

2) Re-Add your email account by select Outlook.

3) Or Just open your email on computer web version.

4) Other (option) no longer work.

5) You can try new email service it's Securityfile they provide Email service absolutely new in 2024!

Folks don't be zombiphobia you can using your computer wich is better and more secure.

Thank you.


Sep 17, 2024 12:20 AM in response to manojWijesinghe

  1. Is this your corporate iPhone? Then please contact the system administrator of your corporate
  2. If it is your personal device, in that case, do you have any profile installed by your corporate/organisation/enterprise/School Management?
    1. Erase the profile added by you If you have installed a profile on your own --> Install or remove configuration profiles on iPhone - Apple ...
    2. Or please contact the system administrator of the organisation who provided the profile to you



It's crucial to emphasize that when you enable 2-step verification for your Outlook (Hotmail) account, you need to utilize a specially generated app password from Microsoft to access the same account through the iOS mail app. --> Manage app passwords for two-step verification


Using an app password is essential if you enabled two-step verification for your Outlook (Hotmail) account. Two-step verification adds an extra layer of security by requiring a code from your phone or authenticator app in addition to your password when signing in. Regular passwords won't work with apps that don't support two-step verification, which is why Microsoft created app passwords. Just generate an app password for your iPhone's mail app and you'll be good to go!

Here are some additional points you might find helpful:

  • You can generate app passwords through your Microsoft account security settings.
  • App passwords are unique and only work for the specific app they're created for.
  • Consider creating strong and unique passwords for your Microsoft account and other online accounts.


This applies to Google, Yahoo and Aol too.


You may have enabled two step verification on Google --> Sign in with App Passwords - Google Account Help

You may have enabled Authenticator for Yahoo --> Generate and manage third-party app passwords | Yahoo Help

You may have activate 2-step verification for Aol --> Create and manage third-party app passwords - AOL Help



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Mail not working on iPhone after iOS 18 Update

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