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iOS 5.1.1: Mail Cannot Connect to Exchange 2010 System\Accounts

Can anyone else confirm iOS 5.1.1 breaks (Exchange 2010) email?


iOS Mail is throwing an error "Connection to the server failed" after updating.


Cannot delete and add the email account again, verification fails.


Devices worked before the upgrade.



Thanks,


-Bradley

iPhone 4, iOS 5.1.1

Posted on May 17, 2012 9:13 AM

Reply
34 replies

May 17, 2012 9:19 AM in response to Bradley Morgan

I can confirm that 5.1.1 DOES NOT break Exchange 2010 email. Mine works just as it always did.


If verification fails this means that the Exchange server is rejecting the connect request. Either the server address is wrong or the user ID or password you are entering is wrong. Or your phone does not conform to your IT security policies.

May 18, 2012 10:59 AM in response to Bradley Morgan

I have had the same thing happen since upgrading to IOS 5.1.1. I was on the phone yesterday with Verizon and network solutions for 3 hours.....not a server issue. Today i was on the phone with tech support at apple for 2 hours.....still not fixed. some are having issues with email, but not all. It may look like your emails are going out, I was not getting an error message and they were in my sent box, but they never made it anywhere.


Off to the apple store tonight, but definitely an upgrade glitch.........

Aug 7, 2012 6:35 PM in response to Bradley Morgan

If your ISP is Comacast read this:


I had similar problems with both my iphone and ipad when using my wifi, but not when using cellular. Turned out to be a Comcast issue with their implementation of DNSSEC validation. You can see my full explanation on my blog at http://blog.trif.com/?p=295. The site is being blocked by Comcast because the Microsoft portal does not meet DNSSEC validation rules. This applies to Comcast DNS Servers 75.75.75.75 and 75.75.75.76.

iOS 5.1.1: Mail Cannot Connect to Exchange 2010 System\Accounts

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