Re: sendmail error, "MX list for mydomain.com points back to server.mydomain.com"

What you were saying about your ISP having bogus entries is quite possibly at least part of the problem.

Sendmail uses real DNS and ignores /etc/hosts (because it needs to look up MX records, there are no MX records in /etc/hosts).  If you *really* want to cheat that, you can run BIND on localhost and put a zone for your own domain answering on localhost, and put 127.0.0.1 in /etc/resolv.conf.  

What is the hostname of your system?

Can you post your full freebsd.mc?

Have you rebuilt your sendmail.cf recently?

-Dan


> On May 18, 2023, at 12:19 AM, vagabond <vagabond@blackfoot.net> wrote:
> 
>> What do you have in /etc/mail/local-host-names?
>  ns.dreamchaser.org
> it did have
>  ns.dreamchaser.org
>  ns.discoveriesinwood.com
> 
>> Are you using the stock freebsd.mc or sendmail.mc or whatever came with the system?
> 
> mc file was originally derived from freebsd.mc from 10.x adapted to 11.3 to 12.3 to 12.4 over the course of upgrades.
> It has:
>  define(`confCW_FILE', `-o /etc/mail/local-host-names')
> 
>> All variants of domains you accept mail for should be in /etc/mail/local-host-names, and if you want to map separately for each domain, you need to set up a virtusertable.
> 
> don't need to map separately.
> 
> Originally I accepted 2 domains, but to get it running I'm willing to change that to only 1,
> dreamchaser.org
> I just got rid of the other entry in local-host-names and bounced sendmail;
> the error persists.
> Any other places I could be messed up?
> 
> Thanks,
> 
> Gary