HP Email Firewall Appliance Series Manual do Utilizador descarregar pdf (Página 39)

Mail Access/Filtering

Pattern Based Message

Filtering

Pattern Based Message Filtering is the primary tool for whitelisting and

blacklisting messages. An administrator can specify that mail is rejected

or whitelisted according to the contents of the message envelope,

message header (such as the sender, recipient, subject), and body text.

See “Pattern Based Message Filtering” on page 54 for more details on

configuring these types of filters.

Message Restrictions The following parameters allow you to reject messages based on the

number of recipients, the message size, or free queue space available.

■ Maximum recipients per message — Set the maximum number of

recipients accepted per message. This helps prevent delivery of spam

messages that typically contain a large number of recipients.

■ Maximum message size — Set the maximum message size (in bytes)

that will be accepted by the 3Com Email Firewall. Ensure that the

specified size can accommodate email attachments.

■ Minimum Free Queue Space (Advanced)— Set the minimum free

queue space available (in bytes) before the system will stop receiving

mail. This option only appears if you click the Advanced button.

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HP Email Firewall Appliance Series Manual do Utilizador Página 39