Viktor Dukhovni: > On Fri, Sep 11, 2015 at 12:25:56AM +0300, Marius Gologan wrote: > > > Is there any way to check the name server (name and/or IP) of the Sender > > domain against RBL service? > > Only via a policy service that does the relevant DNS lookups.
I have used check_sender_ns_access to block persistent spammers.
There are also check_sender_mx_access, and similar features for
client, helo, recipient.
Wietse
