How to reject incoming emails to RT from a certain domain?

We have an RT 3.8.2 setup on linux centOS- We would like to be able to block
emailed tickets created from a certain domain (“linkdn”);

Can anyone advise the best way to do this?

Thanks,andy

We have an RT 3.8.2 setup on linux centOS- We would like to be able to
block emailed tickets created from a certain domain (“linkdn”);

Can anyone advise the best way to do this?

This is usually best done at the level of your mail server. Consult the
appropriate documentation for it.

Thomas