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Q:
Can VSAPI remove an entire message containing an infected attachment?
A:
Yes, VSAPI can remove the entire message. However, it is necessary to select the
Delete whole message
option in
the
Actions
section of the VSAPI settings first. This option is available in Microsoft Exchange Server 2003 and later.
Older versions of Microsoft Exchange Server do not support removal of entire messages.
Q:
Is outgoing email also scanned by VSAPI for viruses?
A:
Yes, VSAPI scans outgoing emails unless you have configured an SMTP server in your mail client that is different
from your Microsoft Exchange Server. This feature is applied in Microsoft Exchange Server 2000 Service Pack 3 and
later.
Q:
Is it possible to add a notification tag text via VSAPI to each scanned message, in the same manner as the Transport
agent?
A:
Adding text to messages scanned by VSAPI is not supported in Microsoft Exchange Server.
Q:
Sometimes I cannot open a particular email in Microsoft Outlook. Why is that?
A: The Action to take if cleaning not possible
option in your VSAPI settings in the
Actions
section is most likely set
to
Block
or you have created a rule that includes the
Block
action. Either of these settings will mark and block both
infected messages and/or messages that fall under the aforementioned rule.
Q:
What does the
Response time limit
item in the
Performance
section stand for?
A:
If you have Microsoft Exchange Server 2000 SP2 or later, the value
Response time limit
represents the maximum
time in seconds required to finish the VSAPI scanning of one thread. If the scan is not finished within this time limit,
Microsoft Exchange Server will deny the client access to the email. Scanning will not be interrupted and after it is
finished, every other attempt to access the file will be successful. If you have Microsoft Exchange Server 5.5 SP3 or SP4,
the value will be expressed in milliseconds and represents the period after which the client will retry to access the file
that had been previously inaccessible due to scanning..
Q:
How long can the list of file types be in one rule?
A:
The file extensions list can contain a maximum of 255 characters in a single rule.
Q:
I have enabled the
Background scanning
option in VSAPI. Until now, messages on Microsoft Exchange Server
were always scanned after each virus signature database update. This did not happen after the last update. Where is
the problem?
A:
The decision to scan all messages immediately or at the user's attempt to access a message depends on several
factors, including server load, CPU time required to scan all messages in bulk and the total number of messages. The
Microsoft Exchange Server will scan every message before it reaches the client’s inbox.
Q:
Why did the rule counter increase by more than one after receiving a single message?
A:
The rules are checked against a message when it is processed by transport agent (TA) or VSAPI. When both TA and
VSAPI are enabled and the message matches the rule conditions, the rule counter may increase by 2 or more. VSAPI
accesses the parts of the message individually (body, attachment) meaning the rules are consequently applied to each
part individually. Furthermore, rules can be applied during a background scan (e.g. repeated mailbox-store scan after
a virus signature database update), which can increase the rule counter.
Q:
Is ESET Mail Security 4 for Microsoft Exchange Server compatible with Intelligent Message Filter?
A:
Yes, ESET Mail Security 4 for Microsoft Exchange Server (EMSX) is compatible with Intelligent Message Filter (IMF).
The processing of emails in the case that message is evaluated as spam is as follows:
- If ESET Mail Security Antispam has the
Delete message
(or
Quarantine message
) option enabled the action will
be executed regardless of the action set in Microsoft Exchange IMF.
- If ESET Mail Security Antispam has the
No action
set, the Microsoft Exchange IMF settings will be used and the
relevant action executed (e.g. Delete, Reject, Archive...).
Write spam confidence level (SCL) to scanned
messages based on spam score
option (in Mail server protection > Microsoft Exchange Server > Transport agent)
must be enabled in order for this feature to work effectively.
Q:
How do I setup ESET Mail Security to move unsolicited emails into the user-defined Microsoft Outlook spam folder?
A:
ESET Mail Security default settings cause Microsoft Outlook to store unwanted email in the
Junk E-mail
folder. To
enable this functionality select the
Write spam score to the header of scanned email
option (under
F5 > Antispam
protection > Mail server protection > Microsoft Exchange Server > Transport agent
). If you want the unwanted
email to be stored in a different folder, please read the following instructions:
1) In ESET Mail Security:
- disable the
Write spam score to the header of scanned email
option, ,
- enable the
No action
action for messages marked as spam,
- define a text tag that will be added into unwanted messages, e.g. "[SPAM]" (under
Antispam protection >
