iOS 7 not playing .wav file from email

our landlord phone system sends voice mails to email via a wav file attachment.  we were able to listen to the wav file in all places, i.e. Outlook, OWA, and iPhone/iPad before moving email from SBS 2008 (exchange 2007) to Office 365.

other change at about same time iOS 7 upgrade.

the current chain goes like this Phone system send to the landlord Exchange 2010 server > the exchange 2010 sends to our Office 365 (exchange 2013) > emails to devices.

Now, we can listen to the wav file on Outlook and OWA but cannot listen on the iPhone/iPad.  it shows as a MIME attachment.

the strange thing is that if your forward the email from Outlook to yourself the wav file will play on the iPhone/iPad.

any searches regarding the MIME attachment generally says that you do not have an app for the file type but of course there is one.

I am thinking it lies with Exchange or office 365 but have been through both the exchange 2010 and O365 and can't find anything actionable.

any help would be greatly appreciated.
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Nick RhodeIT DirectorCommented:
When exchange 2010 was setup does it have unified messaging?
MitchS47Author Commented:
MitchS47Author Commented:
Exchange 2010 phone system setup clarification.
the phone system, copier/scanner, etc., owned by landlord, send Voicemail and scanned docs to the Contact of the tenant on the Exchange server 2010 server.  The Contact is configured with the external email of the tenant.

NOTE:  this worked before the move to Office 365 and iOS7 and still does on Outlook clients and OWA.  we don't have any other device to test such as a windows phone or Android.
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I know on android it doesnt play on the device player you have to download additional software which i done (vlc player) to play the files, also on blackberry since a recent update wav files are no longer supported

What you could do is download additional software and launch it to that software:

The weird thing is when you send it to yourself it plays, there are no blocks on attachments for external receipts is there?
MitchS47Author Commented:
more info.
tested with Galaxy 2 (android, I think) worked OK.

Seems to be issue with iOS / Active Sync only.

no blocks that I am aware of or can find in O365.
MitchS47Author Commented:
any ideas??
Kyle DaviesRetail Software SpecialistCommented:
MitchS47Author Commented:
Thanks.  I prefer not to add more software to the iOS.  it will play the file fine when the message is forwarded to yourself.

all test point to active sync and/or iOS.

any ideas about configuration settings with Active Sync.  email is hosted on Office 365. I have used powershell with O365 if there might be something to try with it.

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