Realtime Block List (RBL) - qmail-dnsbl
Oct 3, 2025:- Added a Data Query Service section, which solves the ban issue from spamhaus from public DNS connections. A Realtime Block List (RBL) is a list of addresses that an RBL list supplier believes are a source of Spam. Download qmail-dnsbl...
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...
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...
