I have Postfix setup on my server so that I can send outgoing mail using the command-line:
mail -s "Subject" firstname.lastname@example.org
- Is this using Sendmail or Postfix ?
- Is "Sendmail" just a software category or a distinct program ?
- If something is "Sendmail-ready" does that mean it will work with Postfix ?
Everything I've read online seems to use these two terms interchangeably.