It seeems that the problem is on your DNS resolver.
127.0.0.1 server is resolving gmail.com to the wrong value.
Name: gmail.com
Addresses: 2a00:1450:4003:80d::2005
142.250.200.69
Try dig gmail.com directly on console to see the result.
Pedro
From: Jaime Ventura [mailto:[email protected]]
Sent: 31 de março de 2021 09:33
To: [email protected]
Subject: [qmailtoaster] Re: CNAME lookup failed temporarily.... again.
Hey,
I havent fixed this yet, but i've found that the system im running is missing
the following patch, so ignore my message.
23 - remove cname lookup from qmail-remote
(https://lists.gt.net/qmail/users/138190) - carryover
Thanks,
J
On Wed, Mar 31, 2021 at 1:21 AM Jaime Ventura <[email protected]> wrote:
Hey all,
A couple of days ago, my server was complaining with "CNAME lookup failed
temporarily" when delivering emails to domain "repsol.com".
At first i couldn't understand what the problem was. Querying MX records for
that domain returned valid results.
I turned to the dns caching server, and noticed that qmail is making a "IN ANY"
query before actually doing a "IN MX".
For instance, when delivering an email to google:
Mar 31 01:03:24 mail named[24968]: client 127.0.0.1#53542: query: gmail.com
IN ANY + (127.0.0.1)
Mar 31 01:03:24 mail named[24968]: client 127.0.0.1#57416: query: gmail.com IN
MX + (127.0.0.1)
I noticed that the same query for "repsol.com" resulted in failure.
$dig @8.8.8.8 in any repsol.com
; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.68.rc1.el6_10.8 <<>> @8.8.8.8 in any
repsol.com
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 27672
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;repsol.com. IN ANY
;; Query time: 2036 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Wed Mar 31 01:13:42 2021
;; MSG SIZE rcvd: 28
I wonder why qmail is issuing a "IN ANY" query.
Also, I'm finding some info on the internet referring to the idea of
deprecating the support to "in any" queries, like this one:
https://blog.cloudflare.com/deprecating-dns-any-meta-query-type/
So, any thoughts about this? Am i wrong about qmail doing "IN ANY" queries
before "IN MX" queries? Im afraid this may this pose a problem in the (near)
future in case everybody starts deprecating the "IN ANY" queries.
cheers,
J
