Kerio Connect - Administrators Guide - Kerio Software Archive

36.3 Defining actions for custom rulesYou can use * (representing any number of characters) and ? (representing max. 1character) or regular expressions.4. Messages which match the filter:• marked as non-spam• mark as spam and rejected• increase/decrease spam score5. Confirm.Custom rules are processed in the same order as they are listed. If a message is marked asnon-spam or rejected, the following rules are not performed.Messages rejected by tests against the From and To headers are not processed by otherantispam and antivirus tests. Since this decreases the load on your server, place the testsat the top.For further information concerning "Regular expressions", please consult the Spamassassinpage.One example for regular expressions:• cialis should be blocked, but specialist, socialist etc., not• regular expression would look like this:If you define a filter which blocks messages including cialis not in the regular expressionsconvention, Kerio Connect will block all messages which include this string, e.g. messageswith the word specialist.Defining actions for custom rulesIf your custom rule rejects a message, Kerio Connect can:• Send bounce message to the sender — this option is not recommended. Spammersusually use fake addresses and your bounce message will be undeliverable.• Forward the message to quarantine address — this option is recommended due to thepossibility of missing important emails by false positives.129