Date: Thu, 18 May 2023 21:43:21 -0700 From: vagabond <vagabond@blackfoot.net> To: "Dan Mahoney (Ports)" <freebsd@gushi.org> Cc: Dewayne <dewayne@heuristicsystems.com.au>, questions@freebsd.org Subject: Re: sendmail error, "MX list for mydomain.com points back to server.mydomain.com" Message-ID: <3da26eb675ecd5d10947fb53fcf3524a@blackfoot.net> In-Reply-To: <D387452C-FEB0-4C39-9B24-983973E1DF70@gushi.org> References: <303e35e4d89e68dcd9863239dcda568e@blackfoot.net> <fc362386-aabd-618f-4dcd-9be14dbe89a5@heuristicsystems.com.au> <30b97aa95162c163c1781ba1a0fa8e25@blackfoot.net> <A118A90A-14E6-409B-AC25-FE2704A19741@gushi.org> <b427a49877034f7407545744b4446744@blackfoot.net> <15AF7ED7-BBD9-428D-939F-4AA5B349C578@gushi.org> <66db9ba3bd66fcc56affdbf7a2621021@blackfoot.net> <2f8bca59462afe206043bea73241bbf2@blackfoot.net> <D387452C-FEB0-4C39-9B24-983973E1DF70@gushi.org>
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On 2023-05-18 19:44, Dan Mahoney (Ports) wrote:
> Do you see it? It’s subtle.
>
> Your system is asking your own 127.0.0.1 DNS for the AAAA for
> ns.dreamchaser.org (because sendmail attempts ipv6 before it attempts
> ipv4)
ok.
> You forgot a trailing . in your NS records. Your DNS kicks back that
> “hey, I don’t know about ns.dreamchaser.org” so it gives you an SOA
> record. (answer = 0, authority = 1)
>
> is doing lookups for ns.dreamchaser.org.dreamchaser.org because of
> that.
>
> Post your zone file?
Staring hard, but I still don't see it.
This is a cut down one (removed comments and other hosts)
which still fails.
secondary names have been changed.
# cat dreamchaser.org.zone
;$ORIGIN DREAMCHASER.ORG.
$TTL 3600 ; default expiration time of resources w/o their own TTL
spec
@ IN SOA ns.dreamchaser.org. root.dreamchaser.org. (
2023051801 ; Serial number of this data
14400 ; Refresh delta, seconds (4 hrs (recommended))
3600 ; Retry delta, if refresh fails, seconds (1 hr,
recommended)
3600 ; Expire, seconds (1 hrs)
600 ) ; Minimum time-to-live, seconds (10 min, for testing)
IN NS ns.dreamchaser.org.
IN NS ns.secondary.org.
IN NS ns.other-secondary.com.
dreamchaser.org. IN A 66.109.141.57
ns IN A 66.109.141.57
dreamchaser.org. IN MX 10 ns.dreamchaser.org.
dreamchaser.org. IN SPF "v=spf1 +mx -all"
dreamchaser.org. IN TXT "v=spf1 +mx -all"
> Here’s what I think it happening: (Have a reference here:
>
> Your system is looking at its own rdns/fdns, and discovering that its
> hostname is ns.dreamchaser.org.dreamchaser.org (probably because your
> primary IP is not present in /etc/hosts). It attempts to deliver to
> itself, and finds that mail SHOULD come to it (since your
> misconfiguration says your MX is ns.dreamchaser.org.dreamchaser.org
> AND that’s what you resolve to, but ns.dreamchaser.org.dreamchaser.org
> isn’t in /etc/mail/local-host-names.
# cat /etc/hosts
::1 localhost.dreamchaser.org. localhost
127.0.0.1 localhost.dreamchaser.org. localhost
66.109.141.57 ns.dreamchaser.org. ns
> * Put your primary addresses in /etc/hosts — there are numerous
> documented cases of sendmail ignoring /etc/hosts but it *might* help
> clue it in to your proper hostname at least.
see above
> * Fix your forward and reverse DNS
> * (and in fact, stop faking it out. Fix it at your hosting provider.
> if your hosting provider is taking this long, find another one)
Not sure what you mean by faking it out?
My isp is my only choice.
Gary
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