Reject Recipient with Catchall configuration

[rvdmeer]

Hello there,

One of our customers has his mail configuration setup to catchall. Since a couple of days he is experiencing problems with spam addressed to: grambor@<his_domain.ltd>.

I already advised him to disable catchall but thats not something he likes to do. Now i advised him to create an email address spam@<his_doman.ltd> and put aliases under it like grambor@<his_domain.ltd>. Just dont make it an emailbox and messages are accepted and stored in /dev/null.

Ok, problem solved you should think.. but now every 30 minutes one email will arrive and i would like to simple block it. Is it possible to block a TO address on qmail level without running something like procmail? and if so, how to.

Thanks in advance.

Kind regards,
Ronald van der Meer