Restricting specific email accounts to send email within their domain.

[tabzali]

Hello Team Cpanel,

I have been following all the threads for the answer for my subject line but seems like we have been redirected to cpanel documents for this.

Well I have read those too, can you please let me know if the below mentioned configuration is right?
==
if ("$h_from:" contains "[email protected]" && "$h_to:" does not contain "*@example.tld")
then fail
endif
==

 

[cPanelLauren]

This would work to restrict [email protected] to only email within example.tld though I would use equals instead of contains for the h_from portion.

 

[Rodger]

I have the requirement. want to limit some accounts only send/receive internal email, others can work normal. Where do I need put the script?

 

[Rohan Bhajekar]

Apparently there is a loophole with this approach.
Loophole is if i include any other email recipient in to, cc or bcc along with a user from domain.com then this filter fall apart and doesn't work.
Ex: my email message contains following users

to: [email protected]
cc: [email protected]; [email protected]