On 2022-05-07 02:39, Greg Troxel wrote:
I agree with what Grant said.
Also, I wonder how much greylisting would help, and if you were already
doing that. The data I posted is for a machine that already does
greylisting in general, with varying times depending on inclusion in
various RBLs and local data.
I find that delaying connections from unknown places even 2 minutes
helps a lot.
i use sqlgrey with 60 mins, but at same time only for recipients that
can live with delays :=)
long delays helps rbls to know more spammers, with after greylist delays
is know as more spam
i cant use postscreen for this policy, so yes in some needs both
postscreen and sqlgrey is super
sqlgrey i have ip whitelist of known maillists to not delay, and
recipient listed in postgresql where opt out, all the best defense is
there
