Avira antivir exchange User Manual
Avira AntiVir Exchange 9
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7.2 Wall spam filtering jobs
7.2.1 AntiSpam with Wall Spam Filtering jobs
This job uses the definite criteria to scan the email for absolutely unambiguous spam features
and, following the scan, decides: 100% spam or 100% no spam. The combined criteria are used
and, following the scan, decides: 100% spam or 100% no spam. The combined criteria are used
to check the "gray zone" to calculate the probability that the scanned email is spam (= spam
probability). The spam probability of the definite criteria is always 0% or 100%, while the
combined criteria can range from 1 to 99. A preconfigured
probability). The spam probability of the definite criteria is always 0% or 100%, while the
combined criteria can range from 1 to 99. A preconfigured
Wall Spam Filtering Job can be
found in the
Policy Configuration. The job contains a number of analyses and checks the
following components of the email:
•
Email headers
•
Subject
•
Message text
Here too - as in normal content checks - predefined dictionaries with widely divergent content
are used to scan for spam text content.
A number of the combined criteria occur frequently in spam mails in the "gray zone" and other
are used to scan for spam text content.
A number of the combined criteria occur frequently in spam mails in the "gray zone" and other
criteria are more indicative of no spam mails. In itself, each combined criterion is normally just
one indicator of whether an email has particular features that indicate spam. The more criteria
with a high value for spam in an email, the more certain it is that this is indeed a spam mail. The
one indicator of whether an email has particular features that indicate spam. The more criteria
with a high value for spam in an email, the more certain it is that this is indeed a spam mail. The
combination of the individual results of these criteria (hence “combined criteria”) yields a
measure in the job that expresses the level of certainty that this email is spam (= spam
probability).
measure in the job that expresses the level of certainty that this email is spam (= spam
probability).