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64 Administrator’s Guide SurfControl RiskFilter - E-mail V5.2.4
S
YSTEM
S
ETTINGS
Key Points
2
Q You can block either a single IP or a block of IPs by using the Subnet Mask.
Q If you already have a list of IP addresses that you want to block, you can import this list to your
blacklist.
Q A Dynamic White List can be auto-generated based on the e-mail process information defined by
RiskFilter. This ensures that normal messages can proceed to their destination directly, without any
Anti-Spam policy checking being performed on them.
Q Domain-Based Delivery enables you to configure relay routing based on the domain of a recipient. It
can also help you to configure the routing delivery methods for e-mail by resolving e-mail servers via
DNS or forwarding to specified e-mail servers.
Q If a message is sent via TLS then RiskFilter will be able to receive it. However, if your mail server will
only accept messages that are sent using TLS, then TLS must be enabled in RiskFilter in order for mail
to be delivered to this server.
Q Traffic Control is designed to limit the mail traffic sent to the e-mail system to protect e-mail systems
from the impact of heavy traffic.
Q If a delivery attempt fails because the e-mail server reports a receiving error, RiskFilter places the
message into the Deferred Messages queue.
Q Administrator Access can be useful to give certain people access to the RiskFilter appliance in order to
carry out specific tasks such as making policy changes, or managing messages stored in the various
Queues.
Q If you enter more than one trusted IP address, then each IP address must be separated by a
semicolon(;).
Q Personal E-mail Manager (PEM) enables the user to look at their isolated spam messages and lets
them decide whether to delete the messages or treat them as legitimate e-mails.
Q You can use wildcards to widen the range of PEM user addresses without having to enter them
individually.
Q You can allow listed users to receive mail without an Anti-Spam check being run on them.
Q You must update components such as Anti-Spam Agent and Anti-Virus Agent regularly, to ensure that
RiskFilter is filtering at its optimum level.
Q The Anti-Spam database is updated three times a day, so the level of protection you are receiving can
change rapidly on a day to day basis.
Q If the number of users exceeds that stipulated by your user license, you will be sent a message
informing you of this fact.