auth-relaytest(1)
NAME
auth-relaytest - attempt to use authenticated SMTP to relay to a DSBLcompliant host
SYNOPSIS
auth-relaytest [-tv] ntlm <ip address[:port]> auth-relaytest [-tv] (cram-md5|login) <username> <password> <ip address[:port]>
DESCRIPTION
auth-relaytest attempts to connect to the specified <ip address> on the
specified port (default is port 25) and tries to use the supplied
authentication data to relay mail through the host.
auth-relaytest uses the sender_user, sender_domain, target_user, target_domain, and auth-message parameters from dsbl.conf(5) by default.
If the auth-message parameter is not present, the message parameter is
used instead.
In the first mode of operation shown, auth-relaytest attempts to
authenticate using anonymous NTLM authentication. A well-known bug in
certain Microsoft SMTP server implementations (described at
http://www.microsoft.com/technet/security/bulletin/MS02-011.asp) will
allow relaying for any client that authenticates in this way.
In the second form of operation, auth-relaytest attempts to authenticate using either the cram-md5 or login variant of SMTP AUTH, using the
supplied username and password.
OPTIONS
- -t Test mode. Instead of using the target_domain parameter from
- dsbl.conf(5), the test_target_domain parameter is used instead. This is useful for sending a test message to yourself, perhaps to check that the server is actually relaying the messages.
- -v Verbose mode. Details of the SMTP transaction are written to
- standard output.
AUTHORS
Paul Howarth <paul@city-fan.org>
Ian Gulliver <ian@penguinhosting.net>