The following table contains network ports that must be opened for Exchange Online backup.
Environment |
Source |
Destination |
Protocol |
Ports |
URL |
---|---|---|---|---|---|
All regions |
Access Node (Mailbox) |
Microsoft Exchange Online |
HTTPS |
80,443 |
|
China region |
Access Node (Mailbox) |
Microsoft Exchange Online |
HTTPS |
80,443 |
|
Germany region |
Access Node (Mailbox) |
Microsoft Exchange Online |
HTTPS |
80,443 |
|
US Government |
Access Node (Mailbox) |
Microsoft Exchange Online |
HTTPS |
80,443 |
|
U.S. Government GCC High endpoints |
Access Node (Mailbox) |
Microsoft Exchange Online |
(HTTP)HTTPS |
80,443 |
|