rbl

Realtime Blackhole List (RBL) - qmail-dnsbl

Update as of Oct 28, 2022: added a note on how to avoid being cutoff by spamhaus (tx Marco Varanda) Download qmail-dnsbl patch (local copy) Code and logic from rblsmtpd and qmail-dnsbl patch by Fabio Busatto Added support for whitelists, TXT and A queries,...

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: http://www.fehcom.de/ipnet/ucspi-tcp6/rblsmtpd.html Greetdelay patch by Erwin Hoffmann: http://www.fehcom.de/qmail/qmail.html##greetdelay A Realtime Blackhole List (RBL) is a list of addresses that an RBL list supplier believes are a source of Spam. rblsmtpd blocks mail...

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...

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