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What tcp port does the original, basic smtp protocol operate on?
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What tcp port does the original, basic smtp protocol operate on?

User Leo Bartkus
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Answer:

Port 25

Step-by-step explanation:

Although port 587 is the standard port for secure SMTP email transmission, older systems sometimes rely on ports 25, 465, or 2525.

User Kazi Manzur Rashid
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