Kerio Tech Version 6.5.2 Manuel d'utilisateur Page 379

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14.3 Learning of the antispam filter
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calendar
tasks
notes
However, this support is limited by features of the email client. Therefore, all events, contacts,
tasks and notes will be displayed only as email messages with an attachment where all data
associated with the corresponding event, contact or task will be included. Events and tasks
include attachments in the .ics format, contacts include attachments in .vcf.
If you use Apple Mail as an email application, it is possible to simply import each event to
Apple iCal (for details, see chapter 11) where it can be viewed in a selected calendar.
Note: Although contacts are saved as .vcf attachments, it is not possible to import them to
the Apple Address Book.
14.3 Learning of the antispam filter
Kerio MailServer contains the SpamAssassin antispam filter. This filter is based on content
analysis (spam messages usually contain specific attributes that can be searched for and eval-
uated by the filter). Each message is assigned a numeric score; if this value exceeds the limit
set in Kerio MailServer, the message is marked as spam.
The spam filter may let some spam messages through from time to time by mistake (their
score is low) and mark some regular messages as spam (their score is too high). For the
reasons above, the antispam filter allows modification to the database used for recognition
of spam messages. This method, however, requires user input. Users have to reassign the
incorrectly evaluated messages to correct types (spam / non-spam) so that the filter learns to
recognize them in the future.
Messages which were marked incorrectly can be re-evaluated by moving them in corresponding
folders. To be specific, to mark a message as spam, move it to the Junk E-mail folder. To mark
a message as legitimate (if it was marked as spam incorrectly by the system), move it to Inbox.
For more comfortable moving of spam to Junk E-mail, use the Junk button on the Apple Mail
toolbar. This option is helpful where spam was let into INBOX and was not marked as spam.
Simply select such messages and click on Junk. Once the button is clicked, the message se-
lected is moved to the Junk E-mail folder and the filter learns to mark similar messages as
spam.
Warning: Unfortunately, it is not possible to add a Not Junk button for cases where legitimate
messages are marked as spam. This happens because the message was marked as spam in
Apple Mail but it was not moved to Inbox and the spam filter would not be capable of learning
the features of the message.
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