Date: August 29, 2005
If you are using AIX sendmail, you should consider the following fix to prevent spammers from using it as an open mail relay.
The exposure applies to AIX 5.3 ML1 and earlier distributions. The exposure was resolved in AIX 5.3 ML2. For more information, see
Name: CAN-2003-0285 (under review)
Description: IBM AIX 5.2 and earlier distributes Sendmail with a configuration file (sendmail.cf) with the
(1) promiscuous_relay, (2) accept_unresolvable_domains, and (3) accept_unqualified_senders features enabled
which allows Sendmail to be used as an open mail relay for sending spam e-mail.
August 29, 2005