SURBL filtering configuration
SURBLs are lists of web sites that have appeared in unsolicited messages. Unlike most lists, SURBLs are not lists of message senders. Web sites seen in unsolicited messages tend to be more stable than the rapidly changing botnet IP addresses used to...
Realtime Block List (RBL) - qmail-dnsbl
A Realtime Block List (RBL) is a list of addresses that an RBL list supplier believes are a source of Spam. Update as of Oct 28, 2022: added a note on how to avoid being cutoff by spamhaus (tx Marco Varanda) Download qmail-dnsbl patch Code...
Setting up rblsmtpd
NB: you can skip this page if you decided to use qmail-dnsbl instead Info: https://www.fehcom.de/ipnet/ucspi-tcp6/man/rblsmtpd.1.html Greetdelay patch by Erwin Hoffmann: http://www.fehcom.de/qmail/qmail.html##greetdelay A Realtime Block List (RBL) is a list of addresses that an RBL list supplier believes are a source of Spam.rblsmtpd blocks mail from RBL-listed...
How to avoid being "cut off" by spamhaus.org
As you probably know spamhaus limits your smtp and DNS traffic (http://www.spamhaus.org/organization/dnsblusage/ for more info) and in case of big servers this can be a serious problem. Luckily, Costel Balta sent me a solution to the problem that I'm going to paste...
