[Sqlgrey-users] idea for improving Discrimination feature

[Riaan K. <ria...@gm...>]

How difficult would it be to allow the postfix attributes on both
sides of the regexp?

If you add two derivative attributes:
sender_domain  &  recipient_domain
you can activate greylisting if:
sender_domain =~ recipient_domain
which would be a very nice rule for anyone running a relay.  I see
many spam forgeries where a sender address is designed to fall under
the same organisation domain to appear legit.  Another rule to play
with would be:
client_name !~ helo_name
which, although standards-compliant AFAIK, might be a bit harsh, I
don't know.  Possibly there are other tricks to invent if the postfix
attributes can be used as plain variables both sides of the
discrimination regexp, but can't think of another example now.

What do you think?

thanks,

Riaan