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Adding the internal MX record did the trick. Thanks Guy!
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Hi,<br />
<br />
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). <br />
<br />
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 &quot;gafe&quot; portion of the address and assumes the recipient is an internal myschool.ca contact. The teacher obviously receives an NDR.<br />
<br />
Any ideas?
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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?

Adding the internal MX record did the trick. Thanks Guy!

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 &amp;quot;gafe&amp;quot; portion of the address and assumes the recipient is an internal myschool.ca contact. The teacher obviously receives an NDR.

Any ideas?

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 Domain Name System (DNS) is a hierarchical, globally distributed system responsible for associating the name of a computer, service or other resource into an IP address for connecting to the Internet or a private network. Most prominently, it translates domain names to the numerical IP addresses needed for the purpose of computer services and devices worldwide.

Within Internet message handling services (MHS), a message transfer agent or mail transfer agent (MTA) or mail relay is software that transfers electronic mail messages from one computer to another using a client–server application architecture. A MTA implements both the client (sending) and server (receiving) portions of the Simple Mail Transfer Protocol (SMTP). The terms mail server, mail exchanger, and MX host may also refer to a computer performing the MTA function. The Domain Name System (DNS) associates a mail server to a domain with mail exchanger (MX) resource records containing the domain name of a host providing MTA services.