Re: Submission Only, Not Listening on 25.

[Viktor Dukhovni]

On Mon, May 17, 2021 at 05:57:35PM -0400, Wietse Venema wrote:

> Comment out the service in master.cf that listens on port 25.
> 
> Command: postconf -# -M smtp/inet
> 
> Result: # smtp      inet  n      ...     ...     ...     ...      smtpd

A fancier, but more easily programmatically reversed method is:

    main.cf:
        master_service_disable = smtp/inet

Note that this would have match the master.cf entry name *exactly*, it
would not disable "127.0.0.1 inet ... smtpd" or similar.

-- 
    Viktor.