McAfee MSA-3400-SWGI Installation Guide - Page 55

Anti-spam, Protocol Settings | Permit and Deny Settings

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Troubleshooting FAQ When I request an immediate update, nothing happens. How do I know when the DAT is updated? To see the installed DAT version number: • In the navigation pane, select Monitor | System Status, then General Status. • Alternatively, select Monitor | Updates. The DAT files are downloaded, checked and applied. The appliance does not wait for the update to complete (which can take a few minutes even with a fast Internet connection) but starts it in the background. Select Monitor | System Status to show the new DAT version number when you next view the page after the new DAT files have been successfully installed. Anti-spam This section discusses anti-spam issues. I cannot find the anti-spam features described in this guide. Some anti-spam features need the Anti-Spam Module to be enabled. I have configured the appliance to reject spam with an RBL Servers check but some spam mail is still getting through. No anti-spam software is fully effective, and cannot guarantee to block all spam email messages. The appliance uses a list of the names of known email abusers and the networks they use. These lists are effective in reducing unwanted email messages but are not complete. To block a specific sender of spam: 1 In the navigation pane, select Configure | SMTP. 2 Select Protocol Settings | Permit and Deny Settings. 3 At Deny Sender, type the sender's email address. Users are not getting normal email messages. Users might not receive normal email messages for several reasons: • The email messages might be coming from someone listed in the Deny Sender list. You might need to: • Refine the Deny Sender list to ensure that wanted email messages are not blocked. For example, you might need to type specific email addresses rather than ban a whole domain or network. • Add the sender, domain, or network to the Permit Sender list. The appliance does scan email from senders, domains and networks in this list for spam. The Permit Senders list overrides entries in the Deny Sender lists. • The email message might have been blocked because it comes from a sender or organization that has been recognized by one of your real time anti-spam lists as a potential source of spam. • The balance between blocking spam and normal email messages might need changing. For example, if the appliance is blocking email messages when there is only a small chance that they contain spam, you risk unintentionally blocking normal email messages. It is better to risk letting some spam through. McAfee Email and Web Security Appliance 5.5 Installation Guide 55

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When I request an immediate update, nothing happens. How do I know when the
DAT is updated?
To see the installed DAT version number:
•
In the navigation pane, select
Monitor | System Status
, then
General Status
.
•
Alternatively, select
Monitor | Updates
.
The DAT files are downloaded, checked and applied.
The appliance does not wait for the update to complete (which can take a few minutes even
with a fast Internet connection) but starts it in the background.
Select
Monitor | System Status
to show the new DAT version number when you next view
the page after the new DAT files have been successfully installed.
Anti-spam
This section discusses anti-spam issues.
I cannot find the anti-spam features described in this guide.
Some anti-spam features need the Anti-Spam Module to be enabled.
I have configured the appliance to reject spam with an RBL Servers check but some
spam mail is still getting through.
No anti-spam software is fully effective, and cannot guarantee to block all spam email messages.
The appliance uses a list of the names of known email abusers and the networks they use.
These lists are effective in reducing unwanted email messages but are not complete.
To block a specific sender of spam:
1
In the navigation pane, select
Configure | SMTP
.
2
Select
Protocol Settings | Permit and Deny Settings
.
3
At
Deny Sender,
type the sender’s email address.
Users are not getting normal email messages.
Users might not receive normal email messages for several reasons:
•
The email messages might be coming from someone listed in the
Deny Sender
list. You
might need to:
•
Refine the
Deny Sender
list to ensure that wanted email messages are not blocked. For
example, you might need to type specific email addresses rather than ban a whole domain
or network.
•
Add the sender, domain, or network to the
Permit Sender
list. The appliance does scan
email from senders, domains and networks in this list for spam. The
Permit Senders
list overrides entries in the
Deny Sender
lists.
•
The email message might have been blocked because it comes from a sender or organization
that has been recognized by one of your real time anti-spam lists as a potential source of
spam.
•
The balance between blocking spam and normal email messages might need changing. For
example, if the appliance is blocking email messages when there is only a small chance that
they contain spam, you risk unintentionally blocking normal email messages. It is better to
risk letting some spam through.
Troubleshooting
FAQ
55
McAfee Email and Web Security Appliance 5.5 Installation Guide