[CentOS] spam control

[Alex Palenschat]

> > What RBL's, if any, do you use if we may ask?
> 
> I currently use:
> 
> sbl-xbl.spamhaus.org
> dnsbl.ahbl.org
> list.dsbl.org
> dnsbl.sorbs.net
> bl.spamcop.net
> dnsbl.njabl.org
> spews.dnsbl.sorbs.net
> cbl.abuseat.org
> relays.ordb.org

Just FYI, it's my understanding that the cbl.abuseat.org list is
included in the sbl-xbl.spamhaus.org list so you can save yourself the
DNS query. Also, the use of spamcop should (in my opinion) be suggested
with a caveat that the user read up on their own description of their
criteria for blocking mail. I have seen large email providers and even
ISPs etc blocked by this list, even if temporarily.

Just my 2 cents,

Alex