What is the GAP Filter ?
Thursday, August 06, 2009 - 12:09 - Support
The Gap filter tries to catch emails that don't get caught by normal filtering methods.
A
lot of emails now are sent with a large number of large unassociated
words which are normally used to get past Bayesian filters. They
generally have an HTML link or a image attachment embeded in the email.
This
routine counts words in emails based on size and the actual number of
words. If the percentage of large words is greater than the specified
limit a match is made.
It is then possible to specify if a HTML link or an Image also has to be in the email before a full match is made.