Avira antivir exchange User Manual
Technical description
17
3.1.5 Compressed files/archives: The Avira AntiVir Exchange
unpacker
Files are often compressed when sent by email. To ensure that the virus scan and all checks also
work for archives, Avira AntiVir Exchange uses an unpacker to be able to check files within the
archive. Avira AntiVir Exchange includes an unpacker which is automatically available after
installation.
The unpacker supports the following archive formats:
work for archives, Avira AntiVir Exchange uses an unpacker to be able to check files within the
archive. Avira AntiVir Exchange includes an unpacker which is automatically available after
installation.
The unpacker supports the following archive formats:
•
ACE
•
CAB
•
ZIP
•
Selfextracting ZIP
•
ARJ
•
Selfextracting ARJ
•
TAR
•
GZIP
•
TGZ (Tape archive)
•
UUE (Executable compressed ASCII archive)
•
LZH (LH ARC)
•
RAR
•
Selfextracting RAR
•
Java Archive (.jar)
•
BZIP2
•
7-ZIP
Note: It is possible for an archive itself to contain archives. These archives (recursively packed
files) are unpacked to a depth of 5 as standard. All archives that exceed this limit are transferred
to the Bad Mail area.
The default upper limit for an email including unpacked files is 300 MB. A limit like this is
to the Bad Mail area.
The default upper limit for an email including unpacked files is 300 MB. A limit like this is
particularly important in so-called "ZIP of Death" attacks.
The unpacking depth and the size limit can be changed in the console under
The unpacking depth and the size limit can be changed in the console under
Basic
Configuration - AntiVir Server - Properties - General.
3.2 The Avira AntiVir Exchange configuration
All the information required to run Avira AntiVir Exchange is stored in the Avira AntiVir
Exchange configuration. The Avira AntiVir Exchange configuration is available in the form of an
XML file (ConfigData.xml).
The ConfigData.xml file is similar in structure to a database. There are different entries for each
Exchange configuration. The Avira AntiVir Exchange configuration is available in the form of an
XML file (ConfigData.xml).
The ConfigData.xml file is similar in structure to a database. There are different entries for each
configuration area. Because the configuration involves a single file, it is very easy to distribute
and back up the configuration. When help is required with configuration problems, the
ConfigData.xml can be sent to the Avira Support Team for analysis.
and back up the configuration. When help is required with configuration problems, the
ConfigData.xml can be sent to the Avira Support Team for analysis.