HP-UX Mailing Services Administrator's Guide

Configuring and Administering Sendmail
Configuring Sendmail to Reject Unsolicited Mail
Chapter 2 85
Creating the Database Map
After creating the Access Database text file, you must use the
/usr/sbin/makemap utility to create the database map. Type the
following command to create the database:
makemap dbm /etc/mail/access < /etc/mail/access
The makemap utility takes /etc/mail/access file as input. It then stores
the results back into the /etc/mail/access.db file.
Enabling Anti-Spamming Relay Features
The gen_cf shell script distributed with Sendmail enables you to turn on
one or more of the following anti-spamming relay features:
• Promiscuous Relay: Relaying from Any Host to Any Host
• Relay Entire Domain: Relaying from Any Host in the Domain
• Relay Hosts Only: Relaying from Hosts Only
• Relaying Based on MX Records
• Relay from Local
• Check Loose Relay
Promiscuous Relay: Relaying from Any Host to Any Host
Promiscuous relay allows you to configure your site to allow mail
relaying from any one site to any other site. This feature is not enabled
by default.
You can enable promiscuous relay by choosing it as an option when
running the gen_cf script distributed with Sendmail. When you enable
this option, Sendmail does not check for relaying. Spammers may then
relay mail through your site.
Relay Entire Domain: Relaying from Any Host in the Domain
By default, only hosts listed as RELAY in the Access Database are
allowed to relay messages. The hosts must be defined in the m class ($=m)
macro to relay. However, this feature allows any host in your domain to
relay mail messages.