1 Topic by samtech

  • samtech
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  • Registered: 2015-12-21
  • Posts: 34

Topic: Force users to use port 587 with STARTTLS instead of 25

==== Required information ====
- iRedMail version (check /etc/iredmail-release):      v0.9.5-1
- Linux/BSD distribution name and version: Debian 8
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Web server (Apache or Nginx): Apache
- Manage mail accounts with iRedAdmin-Pro? Yes  v2.4.0 (MySQL)
- Related log if you're reporting an issue:
====

Is there any way to force all users to use port 587 with STARTTLS for SMTP, instead of port 25.

We can't block port 25 otherwise external mail server will not be able to send mails to our server.

Is there any hack for it?

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2 Reply by ZhangHuangbin

  • ZhangHuangbin
  • ZhangHuangbin
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  • Registered: 2009-05-06
  • Posts: 31,088

Re: Force users to use port 587 with STARTTLS instead of 25

This is default setting in iRedMail-0.9.5-1.

By setting 'smtpd_sasl_auth_enabled = no' in Postfix main.cf, smtp auth on port 25 is disabled.

3 Reply by samtech

  • samtech
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  • Registered: 2015-12-21
  • Posts: 34

Re: Force users to use port 587 with STARTTLS instead of 25

Thanks. It is exactly that i would like to achieve.