active sync does not working - exchange 2010

We had to change the name of the company and of course the email address. After changing the email address to @newdomain.com , everything is working except the active sync( synchronization of the mobile phones).
I tried remote connectivity analyzer and it doesn't show any error message.
Test-ActiveSyncConnectivity also doesn't show any error message.
Any idea how to fix the problem?

[PS] C:\Windows\system32>Test-ActiveSyncConnectivity

CasServer  LocalSite     Scenario        Result  Latency(MS) Error
---------  ---------     --------        ------  ----------- -----
EXCH10HUB  HQ            Reset Creden... Success     3843.75
exch10hub  HQ            Options         Success     2953.12
exch10hub  HQ            FolderSync      Success     1734.38
exch10hub  HQ            First Sync      Success       46.88
exch10hub  HQ            GetItemEstimate Success      109.38
exch10hub  HQ            Sync Data       Success       78.12
exch10hub  HQ            Ping            Success     4968.75
exch10hub  HQ            Sync Test Item  Success       93.75
dedriAsked:
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Alan HardistyCo-OwnerCommented:
You probably just need to wait 24 hours for DNS to replicate and your mobile phone providers to update their DNS before your phones will work, nothing more.

Alan
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dedriAuthor Commented:
no, dns are ok, OWA is working, and they are on the same address.
I checked again and according to the connectivity analyzer  it seems that exchange autodiscover does not work. Autodiscover is working, only exchange autodiscover does not work if I perform the test. IF I perform the full test in exchange autodiscover it doesn't show any error message
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Alan HardistyCo-OwnerCommented:
Is autodiscover.newdomain.comincluded in your SSLcertificate?
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dedriAuthor Commented:
sorry for my late answer,
after a couple of hours suddenly everything was normal and working
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Alan HardistyCo-OwnerCommented:
Not a problem - that's what I thought / said would happen in my first comment :)

Alan
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