Hi all,
After an upgrade of mailcow 2 days ago, while everything is working fine on SMTP/IMAP part, I started to receive emails from watchdog:
CRITICAL - Socket timeout
SMTP OK - 0.007 sec. response time|time=0.007498s;;;0.000000
SMTP WARNING - Invalid response '451 4.3.0 <watchdog@localhost>: Temporary lookup failure' to command 'RCPT TO:watchdog@localhost'
CRITICAL - Socket timeout
SMTP OK - 0.005 sec. response time|time=0.005496s;;;0.000000
SMTP WARNING - Invalid response '451 4.3.0 <watchdog@localhost>: Temporary lookup failure' to command 'RCPT TO:watchdog@localhost'
CRITICAL - Socket timeout
SMTP OK - 0.016 sec. response time|time=0.015639s;;;0.000000
SMTP WARNING - Invalid response '451 4.3.0 <watchdog@localhost>: Temporary lookup failure' to command 'RCPT TO:watchdog@localhost'
CRITICAL - Socket timeout
...
I submitted all the details here: mailcow/mailcow-dockerized5240
The DNS resolution from the watchdog is working fine:
`8a1e0ef1bb6d:/# dig @172.22.1.254 google.com MX
; <<>> DiG 9.18.11 <<>> @172.22.1.254 google.com MX
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 38077
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
;; QUESTION SECTION:
;google.com. IN MX
;; ANSWER SECTION:
google.com. 209 IN MX 10 smtp.google.com.
;; Query time: 0 msec
;; SERVER: 172.22.1.254#53(172.22.1.254) (UDP)
;; WHEN: Sun May 21 20:20:51 CEST 2023
;; MSG SIZE rcvd: 60
8a1e0ef1bb6d:/# dig @172.22.1.254 google.com A
; <<>> DiG 9.18.11 <<>> @172.22.1.254 google.com A
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 30468
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
;; QUESTION SECTION:
;google.com. IN A
;; ANSWER SECTION:
google.com. 206 IN A 216.58.214.174
;; Query time: 0 msec
;; SERVER: 172.22.1.254#53(172.22.1.254) (UDP)
;; WHEN: Sun May 21 20:20:54 CEST 2023
;; MSG SIZE rcvd: 55`
I use Docker 24.0.1 and docker-compose v2.10.2.
Any idea?
Best regards,
Romain
Hum… I can’t receive new emails in fact 🙁
NOQUEUE: reject: RCPT from smtp.mytestserver.com[ipv6]: 451 4.3.0 <me@mytestserver.com>: Temporary lookup failure; from=<me@mytestserver.com> to=<me@myserver.com> proto=ESMTP helo=<smtp.mytestserver.com>