NTMail3 Arbitrary Mail Relay

This script is Copyright (C) 1999-2015 Tenable Network Security, Inc.

Synopsis :

An open SMTP relay is running on this port.

Description :

The remote SMTP server allows anyone to use it as a mail relay, provided
that the source address is set to '<>'.
This problem allows any spammer to use your mail server to send their
mail to the world, thus wasting your network bandwidth and possibly
getting your mailserver blacklisted.

Solution :

Reconfigure your SMTP server so that it cannot be used as a relay
any more.

Risk factor :

High / CVSS Base Score : 7.8

Family: SMTP problems

Nessus Plugin ID: 10167 ()

Bugtraq ID: