Avira antivir exchange User Manual
Avira AntiVir Exchange 9
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Note: When a definite criterion is met, the spam probability is always 0% or 100% and always
occurs in the
occurs in the
None or High probability range with the corresponding actions.
Note: Naturally, these criteria do not affect scanning by differently configured and active email
scanners, such as the scanning of file attachments by AntiVir. Accordingly, if you have enabled
the definite "no spam" criterion
Emails with attachments and have set the threshold
(
minimum number) to 2, this simply means that the spam filtering job will immediately assign
these emails to the spam probability range
None and not that a watchdog job will suddenly
allow these two attachments to reach your network without any checking.
Note: It is not usually necessary to modify the combined criteria. If the spam detection rates are
unsatisfactory, try to optimize the definite spam criteria (exclusion criteria) (see below).
Note: It is not usually necessary to modify the combined criteria. If the spam detection rates are
unsatisfactory, try to optimize the definite spam criteria (exclusion criteria) (see below).
7.2.2 Definite no-spam criteria
The following criteria can be configured in the job as the basis for automatically identifying
emails as non-threatening or as no-spam:
emails as non-threatening or as no-spam:
Criterion
Description
Emails from these trusted senders
(Whitelist)
(Whitelist)
Whitelist: Addresses of all known senders
who are always permitted and who
who are always permitted and who
definitively do not send spam. In principle,
these are all regular communication
partners and the domains of customers and
suppliers. The more complete this list, the
less the system will have to carry out
these are all regular communication
partners and the domains of customers and
suppliers. The more complete this list, the
less the system will have to carry out
unnecessary checks.
Emails from Active Directory users
Other trusted addresses are all users and
contacts entered in the Active Directory.
contacts entered in the Active Directory.
Emails from senders in user whitelist
Email addresses contained in the user
whitelist are allowed through without
being scanned for spam.
whitelist are allowed through without
being scanned for spam.
Emails with attachments
Emails with file attachments Most
unwanted emails do not have attachments.
As an option you can enter a threshold
value here. Example: Minimum value = 2,
unwanted emails do not have attachments.
As an option you can enter a threshold
value here. Example: Minimum value = 2,
i.e. all emails containing only 2
attachments are delivered without a spam
check.
attachments are delivered without a spam
check.
Emails with a minimum size of
Spam mails are generally small.
Accordingly, large emails are not usually
spam. You can set a threshold value here,
so that larger emails do not get checked for
spam.
spam. You can set a threshold value here,
so that larger emails do not get checked for
spam.
Emails are in TNEF format
TNEF emails. This Exchange-specific
format has not been used by spammers to
date.
format has not been used by spammers to
date.