Disable authentication for submission service

[justina colmena ~biz]

I am quite curious about the circumstances of this question. I was not aware that Dovecot actually offered mail submission service. If Dovecot does offer such a service, then it will have to relay the submitted mail to the real MTA, which is very likely not Dovecot. At the moment I have Postfix set up as MTA for that purpose —

Relaying on port 25 is usually quick and easy to whitelist for certain permitted hosts, but otherwise port 587, optionally with STARTTLS, and/or port 465 with SSL/TLS is generally set up for user authenticated mail submissions.

See also:
https://www.mailgun.com/blog/which-smtp-port-understanding-ports-25-465-587/



On July 28, 2021 6:10:28 AM AKDT, Dan Conway <darkc0de at archnix6.net> wrote:
>Hello,
>
>Is it possible to disable the requirement for authentication on the 
>submission service? I'm trying to require authentication for all,
>except 
>for a handful of IP addresses.
>
>Thank you.
>
>
>ehlo test.com
>250-aaa
>250-AUTH PLAIN LOGIN
>250-BURL imap
>250-CHUNKING
>250-DSN
>250-ENHANCEDSTATUSCODES
>250-SIZE
>250 PIPELINING
>MAIL FROM:<test at test.com>
>530 5.7.0 Authentication required.

-- 
Sent from my Android device with K-9 Mail. Please excuse my brevity.
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