When the mail server sends mail to other mail servers it becomes ____________

A. SMTP server

B. SMTP client

C. Peer
D. Master

Explanation: SMTP clients are the entities that send mails to other mail servers. The SMTP servers cannot send independent mails to other SMTP servers as an SMTP server. There are no masters or peers in SMTP as it is based on the client-server architecture.

Occurrence: 0, System Administrator 2026