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What Is Smtp And Its Default Port? |
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Answer» SMTP is PART of the application layer. SMTP moves your EMAIL ACROSS the networks. SMTP by default uses TCP port no 25. It also uses port no 587 for connections SECURED by SSL, known as SMTPS. SMTP is part of the application layer. SMTP moves your email across the networks. SMTP by default uses TCP port no 25. It also uses port no 587 for connections secured by SSL, known as SMTPS. |
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