---
name: "relaytest"
section: "1"
platform: "linux"
package: "dsbltesters"
version: "0.9.5-4"
release: "Debian 8 (Jessie)"
platforms: ["linux"]
url: "https://new.carta.tech/relaytest"
---

# relaytest(1)

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

## 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)](/dsbl.conf/5.md) 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)](/dsbl.conf/5.md), [**spamtrap**(1)](/spamtrap/1.md)