Protocols List -> Send Mail(SMTP)

Send Mail(SMTP) ports range, how to block Send Mail(SMTP) in network?

  Protocol:
Send Mail(SMTP)
Support: WFilter zh.4.0, WFilter en.4.0, WFilter Free 1.0
  Author: imfirewall  
      Simple Mail Transfer Protocol (SMTP) is the standard for e-mail transmissions across the Internet.when e-mail sending,it will be used.  

This protocol is official supported and installed by default.

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     User name:3.133.135.106
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Send Mail(SMTP) uses TCP protocol for communication.

TCP traffic analysis

Ports Range

Dynamic ports, no fixed port found.

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