Jon Smart via Postfix-users:
> > Jon Smart via Postfix-users skrev den 2023-08-16 04:01:
> >
> >> How can I disable auth on port 25? I really don't want users to use
> >> port
> >> 25 for auth sender. i am using postfix version 3.6.4 on ubuntu 22.04.
> >
> > its default disabled, no ?
> >
> > unsure give us "postconf -n | grep auth"
> >
>
> Hello,
>
> here is my output,
>
> $ sudo postconf -n |grep smtpd_sasl_auth
> smtpd_sasl_auth_enable = yes
>
>
> my question is, if I disable smtpd_sasl_auth in configuration, does it
> influence the auth on ports 587 and 465? I just don't want sasl auth
> happened on port 25 (MTA port).
What is the output from
postconf -P '*/inet/smtpd_sasl_auth_enable'
That will show the smtpd_sasl_auth_enable settings in master.cf.
If your have smtpd_sasl_auth_enable=yes for your services on port
587 (submission) and port 465 (smtps or submissions), then you can
remove it from master.cf when all your AUTH users are not using
the port 25 service.
Wietse
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