Suggest an alternative to

mxcheck

mxcheck is an info and security scanner for e-mail servers.

Why do you think that https://github.com/caddyserver/caddy is a good alternative to mxcheck

A URL to the alternative repo (e.g. GitHub, GitLab)

Here you can share your experience with the project you are suggesting or its comparison with mxcheck. Optional.

A valid email to send you a verification link when necessary or log in.