Postfix - SMTP security options - Unexpected behaviour

OS type and version Ubuntu Linux 22.04.4
Webmin version 2.111
Usermin version 2.010
Virtualmin version 7.10.0
Theme version 21.10
Package updates 27 package updates are available

The issue

If you look at the following setting

Webmin → Postfix Mail Server → SMTP Authentication And Encryption → SMTP security options → (Reject anonymous logins | Reject plain-text logins )


With the various options I get the following results for smtpd_sasl_security_options =

GUI Options postconf postconf -d
None –empty– noanonymous
Reject plain-text logins noplaintext noanonymous
Reject anonymous logins noanonymous noanonymous
Reject anonymous login, Reject plain-text logins noanonymous noplaintext noanonymous

the issue

no matter what option i select smtpd_sasl_security_options = is always anonymous


is this intentional on this version of postfix with a Cyrus SASL integration?

The manual says that both noplaintext and noanonymous are current settings

Is this override caused by another setting?


Not all options are available in the GUI for smtpd_sasl_security_options and this should maybe freetype or checkboxes for some and then a input box for free typing non-covered options.

postconf -d shows the default value. This means there is no issue.

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