relaytest(1)

NAME
relaytest - attempt to use SMTP to relay to a DSBL-compliant host

SYNOPSIS
relaytest [-v] <ip address[:port]>

DESCRIPTION
relaytest attempts to connect to the specified <ip address> on the specified port (default is port 25) and uses a variety of tests to attempt to relay through the host. In the tests below, source.com is sender_domain from dsbl.conf(5) and sender is sender_user.

Non-domain-specific tests: MAIL FROM:<sender@source.com>
RCPT TO:<listme@dsbl.org> MAIL FROM:<sender@source.com>
RCPT TO:<"listme@dsbl.org"> MAIL FROM:<sender@source.com>
RCPT TO:listme@dsbl.org MAIL FROM:<sender@source.com>
RCPT TO:<dsbl.org!listme> MAIL FROM:<nobody>
RCPT TO:<listme@dsbl.org> MAIL FROM:<nobody>
RCPT TO:<"listme@dsbl.org"> MAIL FROM:<nobody>
RCPT TO:listme@dsbl.org MAIL FROM:<nobody>
RCPT TO:<dsbl.org!listme> MAIL FROM:<source.com!sender>
RCPT TO:<listme@dsbl.org> MAIL FROM:<source.com!sender>
RCPT TO:<"listme@dsbl.org"> MAIL FROM:<source.com!sender>
RCPT TO:listme@dsbl.org MAIL FROM:<source.com!sender>
RCPT TO:<dsbl.org!listme> MAIL FROM:<>
RCPT TO:<listme@dsbl.org> MAIL FROM:<>
RCPT TO:<"listme@dsbl.org"> MAIL FROM:<>
RCPT TO:listme@dsbl.org MAIL FROM:<>
RCPT TO:<dsbl.org!listme>

relaytest then builds a list of possible domains, including "[127.0.0.1]", "localhost", [<ip address>], and any other domains that can be derived from reverse DNS of the IP or the SMTP greeting.

Domain specific tests: MAIL FROM:<nobody@DOMAIN>
RCPT TO:<listme@dsbl.org> MAIL FROM:<nobody@DOMAIN>
RCPT TO:<"listme@dsbl.org"> MAIL FROM:<nobody@DOMAIN>
RCPT TO:listme@dsbl.org MAIL FROM:<nobody@DOMAIN>
RCPT TO:<listme%dsbl.org@DOMAIN> MAIL FROM:<nobody@DOMAIN>
RCPT TO:<listme%dsbl.org> MAIL FROM:<nobody@DOMAIN>
RCPT TO:<"listme%dsbl.org"> MAIL FROM:<nobody@DOMAIN>
RCPT TO:<listme@dsbl.org@DOMAIN> MAIL FROM:<nobody@DOMAIN>
RCPT TO:<"listme@dsbl.org"@DOMAIN> MAIL FROM:<nobody@DOMAIN>
RCPT TO:<@DOMAIN:listme@dsbl.org> MAIL FROM:<nobody@DOMAIN>
RCPT TO:<dsbl.org!listme> MAIL FROM:<nobody@DOMAIN>
RCPT TO:<dsbl.org!listme@DOMAIN> MAIL FROM:<DOMAIN!nobody>
RCPT TO:<dsbl.org!listme> MAIL FROM:<DOMAIN!nobody>
RCPT TO:<dsbl.org!listme@DOMAIN> MAIL FROM:<nobody@DOMAIN>
RCPT TO:<listme@dsbl.org> MAIL FROM:<postmaster@DOMAIN>
RCPT TO:<listme@dsbl.org> MAIL FROM:<administrator@DOMAIN>
RCPT TO:<listme@dsbl.org> MAIL FROM:<sales@DOMAIN>
RCPT TO:<listme@dsbl.org> MAIL FROM:<info@DOMAIN>
RCPT TO:<listme@dsbl.org> MAIL FROM:<webmaster@DOMAIN>
RCPT TO:<listme@dsbl.org> MAIL FROM:<listserv@DOMAIN>
RCPT TO:<listme@dsbl.org>

relaytest then tries a variety of SMTP AUTH methods to try to relay a message through the target server.

The envelopes used for these tests are always: MAIL FROM:<sender@source.com>
RCPT TO:<listme@dsbl.org>

The SMTP AUTH methods tried are as follows: AUTH LOGIN, user=/webmaster, password=(null)
AUTH LOGIN, user=admin, password=admin
AUTH LOGIN, user=administrator, password=(null)
AUTH LOGIN, user=test, password=test
AUTH NTLM (anonymous)

OPTIONS

-v  Verbose mode. Details of the SMTP transaction are written to standard output.

AUTHOR
Ian Gulliver <ian@penguinhosting.net>

SEE ALSO
dsbl.conf(5), spamtrap(1)