Sendmail - How to test sending email, verbosely using Sendmail

Mail Server :

Sendmail

Purpose :

To verbosely test sending of email using sendmail

Here how :

Prepare a file with name "mail.txt". This will be the email header & contents that we wanna include when test sending this email. The contents of the file should look like below :

FreeBSD - How to make changes to sendmail, FreeBSD styled

Sendmail is the default MTA in FreeBSD. FreeBSD has its own way in managing sendmail's configuration files. Instead of making changes to sendmail.mc, changes should be made to $(hostname).mc. Similarly for submit.mc, changes should be $(hostname).submit.mc.

Here's how :