Microsoft Office Tutorials and References
In Depth Information
Changing an MX record
Take, for example, an email addressed to two individuals, John and Eiji, at Adatum. Figure
11-92 depicts how mail is handled with centralized mail transport disabled:
1. An email arrives at Office 365 FOPE or EOP because Adatum’s MX record has been
changed. John’s mailbox is in Exchange Online and Eiji’s mailbox is on-premises.
2. When the email arrives at FOPE or EOP, it determines the location of John’s and Eiji’s
mailboxes and makes a copy of the email.
3. FOPE or EOP routes one to John’s mailbox located in Exchange Online and routes the
other through Transport Layer Security (TLS) to Exchange on-premises for delivery to
Figure 11-92 No centralized mail transport.