Blacklist outgoing E-Mails

[Agarwen]

Following problem:
We need to block all emails from our system to specific email-adresses.

Note, this isn´t done by SPAM-filter blacklist because it´s only for incomming mails.
We need something like this for outgoing mails.

Hope to find someone with an idea for my problem.

 

[Nikolay.]

Might be an overkill, but writing custom mail handler would help. Probably in before-remote queue. It will check recipients and reject mail if recipient is blacklisted. How to write them is kinda described in documentation.

 

[Agarwen]

Thank you for answer.
We hope to find a easier way to solve this problem.
Something like a config-file but in worst case we will write a custom mail handler.