Which of the following are commonly used Mail Tranfer Agent (MTA) applications?

Which of the following are commonly used Mail Tranfer Agent (MTA) applications?

(Please select THREE correct answers)

Which of the following are commonly used Mail Tranfer Agent (MTA) applications?

(Please select THREE correct answers)

A.
postfix

B.
procmail

C.
sendmail

D.
exim

E.
smtpd

Explanation/Reference:
smtpd is a mail proxy for firewalls with anti-spam and anti-relay features Smtpd uses two programs, smtpd which listens for incoming mail and places it in a private queue, and smtpfwdd, which invokes sendmail to deliver messages from the queue.
procmail is a mail delivery agent (MDA) capable of sorting incoming mail into various directories and filtering out spam messages. Procmail is widely used on Unix-based systems and stable, but no longer maintained; users who wish a maintained program are advised to use an alternative MDA, such as maildrop.



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