Date: Wed, 17 May 2023 23:53:56 -0400 From: "Dan Mahoney (Ports)" <freebsd@gushi.org> To: vagabond <vagabond@blackfoot.net> 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: <A118A90A-14E6-409B-AC25-FE2704A19741@gushi.org> In-Reply-To: <30b97aa95162c163c1781ba1a0fa8e25@blackfoot.net> References: <303e35e4d89e68dcd9863239dcda568e@blackfoot.net> <fc362386-aabd-618f-4dcd-9be14dbe89a5@heuristicsystems.com.au> <30b97aa95162c163c1781ba1a0fa8e25@blackfoot.net>
next in thread | previous in thread | raw e-mail | index | archive | help
First, don=E2=80=99t obscure your domain when you=E2=80=99re trying to = show DNS lookups, it really doesn=E2=80=99t help people trying to help = you. If you need more help and feel shy, feel free to contact me = offlist. Second, the =E2=80=9Cmail loops back to me=E2=80=9D error means = something handed you a piece of mail, ostensibly because your system is = the lowest MX host, but your system doesn=E2=80=99t know it=E2=80=99s = the termination point for it. What do you have in /etc/mail/local-host-names? Are you using the stock = freebsd.mc or sendmail.mc or whatever came with the system? The stock = file has: define(`confCW_FILE', `-o /etc/mail/local-host-names=E2=80=99), but in = long-ago sendmail this file was called sendmail.cw. 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. -Dan (Dayjob: A DNS company you=E2=80=99ve heard of. Also, been running = sendmail in production for 20 years). > On May 17, 2023, at 8:12 PM, vagabond <vagabond@blackfoot.net> wrote: >=20 >> Do you have a "sendmail -bd" running? >=20 > Yes. >=20 > I tried turning on -d8.10 and got the following output at startup, > which I can't interpret... >=20 > ;; res_nquerydomain(ns.mydomain.com, <Nil>, 1, 28) > ;; res_query(ns.mydomain.com, 1, 28) > ;; res_nmkquery(QUERY, ns.mydomain.com, IN, AAAA) > ;; res_send() > ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 31693 > ;; flags: rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0 > ;; ns.mydomain.com, type =3D AAAA, class =3D IN > ;; Querying server (# 1) address =3D 127.0.0.1 > ;; new DG socket > ;; got answer: > ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 31693 > ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: = 0 > ;; ns.mydomain.com, type =3D AAAA, class =3D IN > mydomain.com. 10M IN SOA ns.mydomain.com. = root.mydomain.com. ( > 2023051706 ; serial > 4H ; refresh > 1H ; retry > 1H ; expiry > 10M ) ; minimum >=20 > ;; rcode =3D (NOERROR), counts =3D an:0 ns:1 ar:0 > ;; res_nquerydomain(ns.mydomain.com, mydomain.com, 1, 28) > ;; res_query(ns.mydomain.com.mydomain.com, 1, 28) > ;; res_nmkquery(QUERY, ns.mydomain.com.mydomain.com, IN, AAAA) > ;; res_send() > ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 44741 > ;; flags: rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0 > ;; ns.mydomain.com.mydomain.com, type =3D AAAA, class =3D IN > ;; Querying server (# 1) address =3D 127.0.0.1 > ;; new DG socket > ;; got answer: > ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 44741 > ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: = 0 > ;; ns.mydomain.com.mydomain.com, type =3D AAAA, class =3D IN > mydomain.com. 10M IN SOA ns.mydomain.com. = root.mydomain.com. ( > 2023051706 ; serial > 4H ; refresh > 1H ; retry > 1H ; expiry > 10M ) ; minimum >=20 > ;; rcode =3D (NXDOMAIN), counts =3D an:0 ns:1 ar:0 > res_nsearch failed (-1) > _res.options =3D 800012c3, HasWildcardMX =3D 0 >=20 > I don't understand the 0 answers and NXDOMAIN at all > It's not clear to me where all that is coming from, as strings like = res_send() > don't seem to appear in the source. >=20 > Also, that only prints at startup; apparently it doesn't go through = the domain.c code > for delivery to a localhost, even though I get that error message = back. >=20 > Can anyone tell me / point me to how to build sendmail from the code = in > /usr/src/contrib/sendmail ? >=20 > Thanks, >=20 > Gary >=20
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?A118A90A-14E6-409B-AC25-FE2704A19741>