Exchange 2013 removes sub domain when replying to emails

Hi,

We started a pilot with Google Apps for Education and currently have an internal Exchange 2013 server. Our teachers have an Exchange mailbox (myschool.ca) while the students are using a Google Apps for Education email account (gafe.myschool.ca).

When a student emails the teacher, everything is fine but when the teacher attempts to reply to the email, the mail client (iOS mail, Outlook 2013) removes the "gafe" portion of the address and assumes the recipient is an internal myschool.ca contact. The teacher obviously receives an NDR.

Any ideas?
DSBONEIT CoordinatorAsked:
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Guy LidbetterCommented:
Have look at the students user accounts. If they have a @myschool.ca email address assigned to their user account the GAL would defualt to this even if they don't have a mailbox.

You could update the user account to reflect their gmail email account gafe.myschool.ca.

Then ensure that gafe.myschool.ca is not an accepted domain in your env.

Lastly, consider creating an internal MX record for gafe.myschool.ca that points to the same address as the public MX record.

Regards

Guy
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DSBONEIT CoordinatorAuthor Commented:
Adding the internal MX record did the trick. Thanks Guy!
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