sealqert.blogg.se - Spamassassin rule

SPAMASSASSIN RULE HOW TO
SPAMASSASSIN RULE FREE

To eliminate the use of a particular DNSBL, set the score to zero. If you don't want any DNSBLs used, put a line like For the latest list of DNSBLs you want to be using a recent SpamAssassin version (3.4.1 at the time of this correction) and sa-update, for the same reason that you wouldn't use an out-of-date virus scanner, but that also doesn't really have anything to do with the question.

SPAMASSASSIN RULE HOW TO

You might look at the Mail::SpamAssassin::Conf documentation page which I admit doesn't really say how to configure which DNSBL to use, or the rules file 20_dnsbl_tests.cf, for internal details, but no clear examples of how to configure the inclusion of various DNSBLs either. There must be a way to configure which to use.Ī: You're right.

SPAMASSASSIN RULE FREE

It says "Support for these is built-in" but I can't believe that all free BL's is called each time a mail is beeing checked.

Q: This documentation doesn't seem to cover how to configure DNS-Blocklists. The following blocklist providers have implemented a Block Notification Rule with SpamAssassin: However, we do not support methodologies that purposefully return wrong answers and those DNS-Blocklists will be disabled by default. SpamAssassin supports the "free for some" model since it works for the majority of SpamAssassin installations. The choice is up to the DNS-Blocklist administrator. Resolving the block might be as simple as using your own non-forwarding caching nameserver to avoid being lumped together with other users queries setting up your own mirror of the DNS-blocklist or paying to use the blocklist. If you were directed to this link from a rule description, then you have a DNS-Blocklist that is purposefully blocking your queries. What does this mean?Ī: DNS-Blocklists often run on the "free for some" model and/or they may limit the number of queries you can perform to maximize resources. Q: My queries to a DNS-blocklist were blocked. (For example, a blocklist that returned a match for every single mail would 'catch all the spam', but would also mark every nonspam mail too.) Some of the above pages omit this information, so take with a pinch of salt. Note that it's extremely important to compare false positive rates (nonspam messages marked as spam), as well as spam hit-rates, when evaluating any anti-spam system, include DNS blocklists.

Weekly Blacklist Statistics (including hit rate and false positive rate).

Other places to find out about DNS blacklists / blocklists:

Spamhaus Checking for spamvertized/phishing/malware/botnet/abused redirector sites.The following DNS checks are for URI's (eg http links). Sender Score Certified & Sender Score Safe List (formerly Ironport Bonded Sender & Habeas Safelist).

DNSWL NOTE: DNSWL is enabled as a "free for most" provider.

The following DNS checks are actually for WHITE lists, or sites which are certified by someone to be a reasonable sender. The top and bottom define their white and blacklists.

Mailspike Mailspike has a reputation list of 10 different levels between a good and bad reputation.

The following DNS checks have diverse levels of reputation:

URIBL NOTE: URIBL is enabled as a "free for most" provider.

SURBL NOTE: SURBL is enabled as a "free for most" provider.

Spamhaus ZEN NOTE: Spamhaus is enabled as a "free for most" provider.

SpamCop SpamCop accepts (automatic) submissions and sends abuse mail in your behalve.

SORBS Note: most zones are included except the actual spam zone due to a $50 delisting fee.

Mailspike Mailspike has a few components: in the sense of blacklists Mailspike has a blacklist and a zombie-list (participants of current spam waves).

Support for the following DNSBLs is built-in, and shipped in the default configuration. The SpamAssassin Policy for DNSBL Inclusion is available at DnsBlocklistsInclusionPolicy Black Lists To implement DNS Blocklists, it is heavily recommended to run your own CachingNameserver SpamAssassin Policy for DNSBL Inclusion SpamAssassin includes support for many of the bigger DNSBLs, with optimal scores (or at least, optimal as determined by the GeneticAlgorithm). They're also referred to as "DNSBLs", "DNS Blacklists" and "RBLs". DNS Blocklists are a common form of network-accessible database used in spam detection.