@Money,

The author, Aaron Kili, has left and is no longer working with us. As the admin (me, Ravi Saive), I will respond to users’ comments with solutions to keep this article active.

Maybe because it’s the original and oldest? Have you ever actually configured sendmail before?

Hi Ravi Saive. It says this article was written by one “Aaron Kili” but you are responding as though you wrote it. What gives?

@Dave,

To clarify, MTA (Mail Transfer Agent) manages the transmission of emails between servers, such as Postfix and Sendmail. Meanwhile, MUA (Mail User Agent) is the email client used by individuals, like Outlook or Thunderbird.

I must have unintentionally included MUAs in the MTA list, and I appreciate you pointing that out. If you have any further questions or if there’s anything else you’d like me to clarify, please feel free to ask!