/^[a-z0-9]{6,24}[-_a-z0-9]{12,36}[a-z0-9]{6,24}\s*\z/isSubject has a Unique ID looks for a unique number in the subject. It uses a function rather than a regular expression, so I'm not sure exactly how it does the test. Some spammers put these unique numbers into their spam, either as a way to track where they've sent spam to or as a means to get past primitive filters.
[EMAIL PROTECTED] wrote:
Hello I didnt found infos about in the FAQ and on the Rules Page. Does anyone know what exactly this 2 rules mean (for what he is scanning or so).. a.) Tracker_ID b.) Subject Has a Unique ID
Thank you and sorry!
