Exchange active sync problems after replacing domain controller

Yesterday we replaced our 2003 server with a 2008 server. I transferred the FMSO roles and there didn't seem to be any problems. I haven't even shut down the 2003 one yet. Our Exchange server is on another 2003 server. Apparently now none of the mobile phones/Ipads can sync email now. I have to assume that was the cause since the timing matches up and that's the only thing that has changed. Exchange seems to be running fine and there are no errors on it. Can anyone think what I need to do to fix this I have an Active sync tester I downloaded and when I use it I get this error
ActiveSync detected, but not correctly configured. [HTTP 500: Forms-based auth enabled?]

It was correctly configured before we changed domain controllers.
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Axis52401Security AnalystAsked:
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Simon Butler (Sembee)Connect With a Mentor ConsultantCommented:
Have you rebooted Exchange since doing the DCPROMO? If not I would start by doing that. Exchange is very dependant on the domain and gets upset if the domain controller it was using goes away. Therefore the safest thing to do is reboot Exchange after the DCPROMO has completed.

Simon.
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SeanSystem EngineerCommented:
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Axis52401Security AnalystAuthor Commented:
No we're not using an SSL also later on in another step it says Locate and right-click the mailbox account in the console, and then click Properties. Its not just one user its all users

On the Exchange erver I found these errors not sure if they are the problem or not or how to fix

MS DTC could not correctly process a DC Promotion/Demotion event. MS DTC will continue to function and will use the existing security settings. Error Specifics: d:\nt\com\complus\dtc\dtc\adme\uiname.cpp:9351, Pid: 20588
No Callstack,
 CmdLine: C:\WINDOWS\system32\msdtc.exe

and

MS DTC could not correctly process a DC Promotion/Demotion event. MS DTC will continue to function and will use the existing security settings. Error Specifics: %1
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Axis52401Security AnalystAuthor Commented:
I found an article on fixing the MS DTC error and now get this. the mobile devices still cannot connect.

MS DTC has detected that a DC Promotion has happened since the last time the MS DTC service was started.
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Axis52401Security AnalystAuthor Commented:
No I was hoping to avoid doing that during the day, rebooting now
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Axis52401Security AnalystAuthor Commented:
Should have known, always reboot first, thanks
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