when i check the :recheck configuration" it gives the following message
"The status of your system is being checked to ensure that all enabled features are available, that the mail server is properly configured, and that quotas are active …
BIND DNS server is installed, and the system is configured to use it. Sendmail is only accepting SMTP connections on the following ports : 127.0.0.1 port smtp. Email from other systems on the Internet will not be accepted. This can be changed in the Sendmail Mail Server module.
… your system is not ready for use by Virtualmin."
how to fix the sendmail?