rlytest

The rlytest project is a helpful software tool that allows you to test a host and determine whether it will relay third-party email. By sending an email message to yourself through the host, this project checks whether the host is vulnerable to third-party relay.

It's important to identify such hosts because they are often targeted by Internet vandals and spammers to relay huge amounts of junk email. A host that allows third-party relay can be a major source of trouble, posing a considerable threat to the stability and security of the Internet.

The rlytest project is written in Perl and requires Perl version 5.002 or above to run. Additionally, you will need the IO::Socket module, which is distributed with the core Perl 5.004 package. If you are using an earlier version of Perl, you can add this module as an option.

The latest release comes with minor revisions to the text of the probe email message. If you're looking for a reliable software tool to test whether a host will relay third-party email, this project is definitely worth a try. Its straightforward interface and easy-to-understand results make it an essential addition to your software toolkit.