Qus: SMTP protocol works on which port number?

QusSMTP प्रोटोकोल किस Port नंबर पर कार्य करता है ?

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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:

• 587 → Secure email submission (modern standard)
• 465 → SMTPS (older secure method)