Re: [exim] Exim SPAM control DNSBL

Hello,

Heiko Schlittermann writes:

>     . verification of reverse DNS¹
>     . helo verification¹
>     . strict sender/recipient verification²
>     . greylisting²
>     . content scan²
>     . delays

Also dynamic IP address filtering, and rather then using DROP or DENY, I
have found DEFER does a very nice job in frustrating multi-attempt spammers.


---

DynaStop: Stopping one dynamic IP address at a time. Tested against 350+
million IP addresses!
http://tanaya.net/DynaStop/