On 2021-11-19, russellbell--- via Exim-users <exim-users@???> wrote:
> I'm trying to configure a domain that has never accepted mail
> from external sources to start. The server runs exim, which I've
> never used. I send a message to the domain using its IP, for example
> fred@123.456.789.012. exim returns:
>
> 'rejected RCPT : The mail server could not deliver mail to
> 'fred@123.456.789.012. The account or domain may not exist,
> 'they may be blacklisted, or missing the proper dns entries.'
>
> dig mx 123.456.789.012
>
> returns NXDOMAIN.
MX is not required. do you have a DNS record for your domain
(like you claim in the subject) or do you only have an IP address?
You probably need to configure [123.456.789.012] as one of the domains
that exim accepts for. you may need to enable IP literal domains too.
--
Jasen.
