RBL & greylisting on Ubuntu.com smtp

[Lionel Dricot]

Hello,

I don't know about you, but my ubuntu.com mail address is full of
spam. Really really full !

I was wondering why RBL checking and greylisting wasn't working until
I realize that all this spam go through de ubuntu.com smtp first !

So, may I suggest to use the following configuration ?  (I've seen
that  fiordland is using postfix, good choice ;-) )


1. Grey listing

Greylisting is a "new" (hem) anti-spam tool which is very very
efficient. I use it on my own webserver and it was a breeze to
install, config and use :
http://www.greylisting.org/articles/whitepaper.shtml

See http://www.mneylon.com/blog/archives/2005/10/07/postgrey-greylisting-in-postfix-on-ubuntu-debian/
for a complete howto :-)


2. SBL-XBL

in main.cf, simply add :

smtpd_client_restrictions =
        [your-usual-config],
        reject_rbl_client cbl.abuseat.org,
        reject_rbl_client dul.dnsbl.sorbs.net,
        reject_rbl_client dynablock.njabl.org,
        check_policy_service inet:127.0.0.1:60000

(last-line is postgrey related )


It could really help to fight the spam to have this config.

Thanks you for reading

Ploum

PS : posted to sounder because I had no idea where to post it. It's
not ubuntu-devel related.