====== Zimbra Outbound Mail Relay ======

===== SmartHost Relay =====

Globally route all outbound mail through another server:

**Zimbra Admin -> Configure -> Global Settings -> MTA -> Relay MTA for external delivery**

===== Relay Per Domain =====

:!: This might be use to channel outbound e-mail through a **spam filter service**.

Relay mail from a particular domain through another server:

https://wiki.zimbra.com/wiki/Relay_per_Domain