How to use another port for SMTP connection if 25 port is blocked by ISP

Created:

2016-11-16 13:07:20 UTC

Modified:

2017-08-08 13:23:05 UTC

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How to use another port for SMTP connection if 25 port is blocked by ISP

Applicable to:

  • Plesk for Linux

Question

How to use another port for SMTP connection if 25 outgoing port is blocked by ISP?

Answer

It is not possible to configure another outgoing port since postfix should use 25 port anyway. Please, contact your ISP.

Additional information

  • For configuring Mail Submission port 587 in Plesk for Windows please refer to the article
  • For configuring Mail Submission port 587 in Plesk for Linux please refer to the article
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