HP Email Firewall Appliance Series Manual de usuario descargar pdf (Pagina 40)

40 CHAPTER 3: CONFIGURING MAIL SECURITY

SMTP Authenticated

Relay

This feature allows authenticated clients to use the 3Com Email Firewall

as an external mail relay for sending mail. For example, you may have

remote users that need to send mail via this system.

Client systems must use a login and password to authenticate to the

system before being allowed to relay mail. Authenticated relay can also

allow authorized mail servers to use this 3Com Email Firewall as a relay.

Users must have a local account on this 3Com Email Firewall for the

feature to work.

It is recommended that you accept SSL/TLS for incoming mail connections

so that account details cannot be intercepted when the relay is enabled.

See

“SMTP Security”

page 41

for more detailed information on

setting up SSL/TLS encryption.

SMTP Banner Click the Advanced button to reveal an option for the SMTP banner.

The SMTP banner is exchanged during the HELO session of an SMTP

connection. This banner contains identifying information for your 3Com

Email Firewall which can be used as information to launch attacks against

it. This option allows you to customize the SMTP banner and remove the

3Com Email Firewall’s hostname by using the

Domain only

option.

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HP Email Firewall Appliance Series Manual de usuario Pagina 40