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So the first account works without issue.<br />
Are you adding the subsequent Exchange accounts from within the existing Exchange account configuration or trying to start from scratch at the top-level Add Account item?
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Hi there, top level --&gt; add account --&gt; Exchange --&gt; new email address, password, go. --&gt; error.
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Hi Tingathewinga,<br />
<br />
You might want to check this:<br />

<blockquote>
Some MS Exchange servers are set up where the provider has policies to limit the number of devices, and require those with new phones to remove old ones (form in settings via OWA webmail) to be under that limit before adding a new device.
</blockquote>
Or see if any solutions from an article I wrote about iPhone and Exchange connection issues helps resolve your problem.<br />
<a href="https://www.experts-exchange.com/articles/19119/iPhone-Samsung-Will-Not-Connect-or-Sync-To-Microsoft-Exchange-Server.html" rel="ugc">https://www.experts-exchange.com/articles/19119/iPhone-Samsung-Will-Not-Connect-or-Sync-To-Microsoft-Exchange-Server.html</a><br />
<br />
Let me know if you have any questions.
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Try adding the new exchange server account from within the existing Exchange configuration with the <b>Add account</b> option.
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What we have found, is that the username sent back for domain2 and domain3, is in fact domain1 (original domain).<br />
So looks like exchange is sending back the wrong autodiscover XML or similar.<br />
At the moment I am using Public SRV records so autodiscover.domain2 and 3, resolve to autodiscover.domain1.<br />
Phones are getting right server details, but wrong usernames.<br />
The plot thickens....
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Also test your auto discover config and connectivity with<br />
<a href="https://testconnectivity.microsoft.com" rel="ugc nofollow">https://testconnectivity.microsoft.com</a><br />
<br />
That is if you haven't already
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<div class="content wysiwyg-content">
Recently added two new domains into an Exchange 2010 SP3 server for a total of 3.<br />
Each user has 3 different usernames and mailboxes.<br />
15 Users, 12 Androids, 3 iPhones.<br />
All androids connect to all 3 exchange accounts without issue and send/receive just fine.<br />
The 3 iPhones ALL suffer from the same issue which is.<br />
<br />
When adding ANY 1 of the 3 accounts, no problem.<br />
When adding the 2nd account, they cannot and get the error that an identical exchange account already exists.<br />
Found lots of post online talking about this issue being caused by 3 mailboxes with same user and pass, but this site has different usernames, and mailboxes.<br />
<br />
Any help would be appreciated.<br />
<br />
Cheers<br />
<br />
Craig
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</div>


Recently added two new domains into an Exchange 2010 SP3 server for a total of 3.
Each user has 3 different usernames and mailboxes.
15 Users, 12 Androids, 3 iPhones.
All androids connect to all 3 exchange accounts without issue and send/receive just fine.
The 3 iPhones ALL suffer from the same issue which is.

When adding ANY 1 of the 3 accounts, no problem.
When adding the 2nd account, they cannot and get the error that an identical exchange account already exists.
Found lots of post online talking about this issue being caused by 3 mailboxes with same user and pass, but this site has different usernames, and mailboxes.

Any help would be appreciated.

Cheers

Craig

Iphones not able to connect to additional exchange accounts on same server

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

The iPhone is a smartphone made by Apple Inc. It and the iPad, along with several other mobile devices from Apple, run on the iOS operating system, which has its own topic, as does the iPad for device-specific questions. Native iOS applications are written in Objective-C or in Swift using the Cocoa Touch frameworks or HTML5 compiled with the help of a package manager such as Adobe PhoneGap; a common IDE is Xcode.