Example:
Zimbra domain is set up as:
zimbra.whatever.com
Users are:
username@zimbra.whatever.com
However, when sending mail out, we want it to show up as:
username@whatever.com
Here’s the command to make this work:
zmprov md zimbra.whatever.com zimbraMailCatchAllAddress @zimbra.whatever.com zimbraMailCatchAllCanonicalAddress @whatever.com