Hi,
> Do you use any MTA-level DNSBLs?
No.
If you have ample of ressources you can do this. If you are getting
tenthousands of mails you can't (or won't). We reject about 90% of the
spam at MTA. That's mostly Bot spam. Why should we burn good ressources
for that stuff? Interestingly, that also kills almost all of the "fierce"
spam that might slip thru SA. So, SA then does a very good job on the rest
which lets slip only a few by. With SA only we would have much more slip
by. And we don't need any extra rules (like SARE, KAM) anymore. I'm using
sought, but it doesn't appear to be too efective.
Which SA plugin performs this? Is it Mail::SpamAssassin::Plugin::URIDNSBL?
