CHAPTER 9. BACKUP COPYING
Kaspersky Security for Microsoft Exchange Server 2003 allows saving a backup
copy of an initial object before processing. For example, before an attempt to
disinfect or delete such object or before declining or deleting a message
containing SPAM attributes, an initial copy can be saved to the
backup storage.
Later on objects located in the backup storage may be:
•
restored
- in order to obtain information contained in the object.
Additionally, you can restore the infected object and try to scan it with the
file anti-virus using an updated anti-virus database (see section 9.3, page
80).
•
deleted
- (see section 9.6, page 82).
•
sent to be inspected by Kaspersky Lab
(only for suspicious files
containing a modification of a known virus or code of a virus still
unknown). Our specialists will analyze the file, attempt to recover the data,
and if it turns out that the file is infected with malicious code, make an
entry in the anti-virus database. Then, when you scan this file with File
Anti-Virus using the updated database, you can disinfect it and maintain
the integrity of the data in it (see section 9.4, page 81).
•
sent to recipients
unchanged (only for e-mails deleted or rejected by a
spam scan). For more, see section 9.4, page 81.
A backup copy of the object will be created only if the
Save a copy of
the original object in the backup storage
box in the anti-virus protec-
tion settings (see section 6.5, page 57) and anti-spam settings (see
section 7.2, page 67) is checked.
The object is stored in the backup storage in the encrypted form, which ensures:
•
no risk of infection (object is not accessible without decoding);
•
saving time for the anti-virus application (encrypted files stored in the
backup storage are not identified as infected).
Data that can be stored in the backup storage may be restricted by one of the
two following parameters: backup storage size or objects storage period. By
default, the size of the backup storage is limited; the maximum size is 500 MB.
The compliance with the restrictions is checked when a new backup copy is
saved to the backup storage. The application performs the following actions:
•
if the backup storage size is limited and there is no enough free disk
space to save the new object, the application will free the required space
by removing the "oldest" objects;
