Block Port 25 in SMTP Service

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Syed Tahir

• December 18, 2024 10:42

If we remove port 25 or block in our windows OS Firewall outbound rule then we are not able to send email using webmail. We do not want to allow to use this port 25.

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  Alexander

  • October 03, 2025 14:38

  U can't block the outbound traffic since it's being used as the main port for sending emails, if u don't want your clients to not be able to connect using port 25, u have to create an inbound rule.

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