May 252016

in order to make rbldnsd as rhsbl authoritative nameserver for unbound, the simple way is to create stub-zone like this:

        name: ""

if we configured unbound as iterator and validator, this minimal configuration will not work. when you query for example:

# dig

we will get “SERVFAIL” replied.
the simple way is by turned off validator function in unbound, but if we still want validator function in unbound, we can simply exclude our rhsbl zone in stub-zone as insecure domain.

domain-insecure: ""

now, we wlll get reply as expected

# dig +short

and in rbldnsd start up config

RBLDNSD="dsbl -r/var/lib/rbldnsd -t 300 -b"

happy blacklisting 😀

combined with script here: we can use it as header_checks map. here’s the result:

May 25 19:11:31 mx1 postfix/cleanup[146988]: 68A203080DD: reject: header From: Dominic McXXX <> from[]; from=<> to=<> proto=ESMTP helo=<spammer>: 5.7.1, which appears in the 'From' header, is listed on
Aug 152011

I received email from someone fiew days ago, he directed me to an article about senderscore and and asked if I could make it usable. Actually, I’m not very familiar with how senderscore work. I’ve read the article and see the FAQ at I have found that senderscore can be queried with a format like this:

Ie, I want to know the score value of ip address, the format of the query would be like this:

$ dig a +short

Look at the answers given by senderscore’s NS. last octet is the score of the ip address, which scored 75.

Excerpts from senderscore faq:

All scores are based on a scale of 0 to 100, where 0 is the worst, and 100 is the best possible score. A score represents that IP address’s rank as measured against other IP addresses, much like a percentile ranking.

Now back to the article, The authors make a perl module that can perform queries to senderscore ns, put a “reputation score” into memcache, at the same time, calculating how many times an ip address connected to our smtp.

Let’s begin, first of all download Policy::Memcache from this git repository 
Create a working directory, and extract the tarball.

$ mkdir pol-mem && cd pol-mem
$ tar --extract --file=petermblair-libemail-f73612c.tar.gz petermblair-libemail-f73612c/perl/senderscore/memcache/
$ mv petermblair-libemail-f73612c/perl/senderscore/memcache/* .

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