How to disallow a user to relay

[rajeshkodali]

Is there a procedure to disallow users to mail external domains from Admin console.

[mmorse]

Welcome to the forums,
What your asking about isn't usually called 'relay' you just want 'internal domain emailing only'.

Current method: Restrict sending to certain domains - ZimbraWiki (sry command line not admin console)

This RFE has distribution lists in the name-but the goal is to have the following options for every user:
-User can send email outside of his domain
-User can receive mail from outside his domain.
Bug 9620 - Mail policies and access control for sending to distribution lists
(be sure to add your vote)