lists--- via Postfix-users:
> I have a user with an 'old' printer/scanner who wants to scan/email scans
> from the home located device
>
> printer offers:
> machine email address:
> SMTP server:
> SMTP server port:
>
> send authentication: PoPb4SMTP/SMTP AUTH: Plain/Login/CRAM-MD5/Auto
If the printer is connecting over the Internet in plaintext, then
one option is don't bother with TLS and SASL auth. Instead configure
an smtpd in master.cf on a TCP port for use by that customer.
/etc/postfix/master.cf:
12345 inet n - n - - smtpd
-o {mynetworks = 1.2.3.4}
-o {smtpd_recipient_restrictions = permit_mynetworks, reject}
Either way, having AUTH on port 25 is wasteful (many dictionary
attack bots).
Wietse
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