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QusSMTP protocol works on which port number? QusSMTP प्रोटोकोल किस Port नंबर पर कार्य करता है ?

A. 80
B. 143
C. 110
D. 25

Solution

D. 25

Explanation

SMTP (Simple Mail Transfer Protocol) is used for sending emails.The default port for SMTP is 25.Other commonly used SMTP ports:<ul><li>587 → Secure email submission (modern standard)</li><li>465 → SMTPS (older secure method)</li></ul>