Kerio Tech Version 6.5.2 - Manual (Page 231)

5.6 Rules for incoming messages
231
Figure 5.20 Rule Editor
Where the From line contains address
The From entry contains the string.
Where the To line contains address
The To entry contains the string.
Where the Cc line contains address
The Cc (Copy To) entry contains the string.
Where the Sender line contains address
The Sender entry includes the string. This entry is often contained in messages sent
automatically (mailing lists, etc.) where it stands for the From entry.
Where the Subject contains specific words
The Subject entry contains defined string(s).
Kerio MailServer spam filter can be set so that the Subject entry will include results of
antispam tests (the value is represented by asterisks). Using this feature spam may
be filtered easily. Simply insert the number of asterisks that will specify the rule.
Messages that match this rule will accept this specification.