Public bug reported:
This morning i've got a kernel update. After that I could not send mails
using thunderbird contacting my mail provider kontent.com.
The last working system was: Linux server 4.15.0-117-generic #118-Ubuntu
SMP Fri Sep 4 20:02:41 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
I tried 4.15.0-118 and 4.15.0-121 but using these I could not resolve:
smtp.kontent.com - but I could resolve www.google.de.
So it seems that using the newer kernels 118 and 121 I can not resolve
some but not all addresses.
I returned to kernel 4.15.0-117 and everything works fine again.
systemd-resolve --status
Global
DNS Servers: 172.30.30.1 <--- this is an local router next to my
"server"
DNS Domain: ami.intranet
DNSSEC NTA: 10.in-addr.arpa
16.172.in-addr.arpa
168.192.in-addr.arpa
17.172.in-addr.arpa
18.172.in-addr.arpa
19.172.in-addr.arpa
20.172.in-addr.arpa
21.172.in-addr.arpa
22.172.in-addr.arpa
23.172.in-addr.arpa
24.172.in-addr.arpa
25.172.in-addr.arpa
26.172.in-addr.arpa
27.172.in-addr.arpa
28.172.in-addr.arpa
29.172.in-addr.arpa
30.172.in-addr.arpa
31.172.in-addr.arpa
corp
d.f.ip6.arpa
home
internal
intranet
lan
local
private
test
Link 2 (enp0s25)
Current Scopes: DNS
LLMNR setting: yes
MulticastDNS setting: no
DNSSEC setting: no
DNSSEC supported: no
DNS Servers: 172.30.30.1
DNS Domain: ~.
ami.intranet
andreas@server:~$ host smtp.kontent.com
smtp.kontent.com has address 81.88.40.61
doning the same with a newer kernel results in a "SERVERFAIL 2 error"
** Affects: systemd (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1899797
Title:
dns does not resolve some names after updating kernel from 4.15.0-117
to a newer sub_version like -118 or -121
Status in systemd package in Ubuntu:
New
Bug description:
This morning i've got a kernel update. After that I could not send
mails using thunderbird contacting my mail provider kontent.com.
The last working system was: Linux server 4.15.0-117-generic
#118-Ubuntu SMP Fri Sep 4 20:02:41 UTC 2020 x86_64 x86_64 x86_64
GNU/Linux
I tried 4.15.0-118 and 4.15.0-121 but using these I could not resolve:
smtp.kontent.com - but I could resolve www.google.de.
So it seems that using the newer kernels 118 and 121 I can not resolve
some but not all addresses.
I returned to kernel 4.15.0-117 and everything works fine again.
systemd-resolve --status
Global
DNS Servers: 172.30.30.1 <--- this is an local router next to my
"server"
DNS Domain: ami.intranet
DNSSEC NTA: 10.in-addr.arpa
16.172.in-addr.arpa
168.192.in-addr.arpa
17.172.in-addr.arpa
18.172.in-addr.arpa
19.172.in-addr.arpa
20.172.in-addr.arpa
21.172.in-addr.arpa
22.172.in-addr.arpa
23.172.in-addr.arpa
24.172.in-addr.arpa
25.172.in-addr.arpa
26.172.in-addr.arpa
27.172.in-addr.arpa
28.172.in-addr.arpa
29.172.in-addr.arpa
30.172.in-addr.arpa
31.172.in-addr.arpa
corp
d.f.ip6.arpa
home
internal
intranet
lan
local
private
test
Link 2 (enp0s25)
Current Scopes: DNS
LLMNR setting: yes
MulticastDNS setting: no
DNSSEC setting: no
DNSSEC supported: no
DNS Servers: 172.30.30.1
DNS Domain: ~.
ami.intranet
andreas@server:~$ host smtp.kontent.com
smtp.kontent.com has address 81.88.40.61
doning the same with a newer kernel results in a "SERVERFAIL 2 error"
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