-b, --blacklist Check if the service is on blacklists
-d, --dnsserver string The dns server to be requested (default "8.8.8.8")
-f, --mailfrom string Set the mailFrom address (default "info@foo.wtf")
-t, --mailto string Set the mailTo address (default "info@baz.wtf")
-n, --no-prompt Answer yes to all questions
-s, --service string The service host to check (mandatory flag)
-S, --dkim-selector The DKIM selector. If set a dkim check is performed
-v, --version Version and license
-u, --updatecheck Check if a new version of mxcheck is available
-w, --write-tsv Write tsv formated report to file
mxcheck queries the following services for the hostname, resp. the IP adress of an mx host. If the hostname or the IP adress is listed, the e-mail server is blacklisted.