Restrict mails to/from specified mail server(s)

[wcbenyip]

Hi ALL,

I checked this but there is no way to do so before, and I am not sure whether the latest version is enriched the power, so here is my question:

Can I restrict my users just allowing them to send mails / receive mails from specified SMTP servers (eg. xxx@abc.com) from the Internet (not hosted in the same network)?

Details: We want to allow the users @ZCS can communicate with the other parties that are using the outside pop/smtp service, but we don't want our users to communicate with the rest like their friends, personal email address...etc

Anyone know how to do so? Many thanks!

Current version -
OS: Ubuntu 8.04.4 LTS
ZCS: 6.0.5 GA

[uxbod]

Restrict sending to certain domains - Zimbra :: Wiki