Tarpit

[dcol]

It would be great to have a tarpit to pass those nasty repetitive IP's to slow them down a bit.
Something like this https://haraka.github.io/manual/plugins/tarpit.html
Possible? Would be a killer feature for OPNsense. Love to throw those GeoIP hits in there.
Just thinking out loud.

[fabian]

We do not have a node mail server. It is a postfix mail server with rspamd as a milter.