mxcheck - a smtpd checker

I needed a tool to check mail servers for open relaying and proper dns settings. There are several web sites providing such services, but I like my tools locally if possible.

As I couldn’t find such a tool, I wrote one. You can find it on Github:

https://github.com/steffenfritz/mxcheck

With golang installed you can go get it with

go get github.com/steffenfritz/mxcheck

Usage is simple:

./mxcheck -t TARGETHOST