I've seached the forum for mention of this using "block external mail" "block outbound mail" "restrict outbound" and a few others but I've not found it. Should anyone know of a thread where this is already answered then please let me know and accept my apologies.
That said, here's the deal.
I've just been asked to make it so that certain email accounts in Zimbra cannot send email to external addresses. They should be able to send internal mail, so firstname.lastname@example.org can send mail to email@example.com but not to firstname.lastname@example.org for example.
This needs to be done for a number of accounts, and as is normal for these things, it needs to be done as soon as possible.
Could someone point me in the right direction for solving this, ideally with an easy to follow example or script.