Re: Moved web site NOT qmail to another machine -> 553 sorry, that domain isn't allowed to be relayed thru this MTA without authentication ; no valid cert for gateway #5.7.1

Manvendra Bhangui <[email protected]> Wed, 6 Feb 2019 17:46:46 +0530
Newsgroups gmane.mail.qmail.general
Message-ID <CAOqj+1N5vPZ2sZPb9HsDbBsorSYSsg-_+XHPkgV8iX7KcWn2Sg@mail.gmail.com>
On Wed, 6 Feb 2019 at 17:18, Philip Rhoades <[email protected]> wrote:
>
> Yes.
>
> In fact the machine that I moved the web site to is the one that we
> previously set up for testing out indimail - which is still only working
> for a couple of my minor domains.
>

Check your MX records. Looks like you have by mistake changed the MX
record too.
$ dnsmxip dnsmxip philiprhoades.org
philiprhoades.org 103.225.161.36 10

$ ping philiprhoades.org
PING philiprhoades.org (103.225.161.36) 56(84) bytes of data.
^C
--- philiprhoades.org ping statistics ---
3 packets transmitted, 0 received, 100% packet loss, time 67ms