Hi!

Today I woke up and out mailserver was not running. The browser shows privacy errors, saynig that the certificates were wrong. I’ve been looking for the problem for hours but I don’t find anythog. Could somebody help me troubleshoot this?

The only thing that cathed my attention was these messages in journalctl (I’m using dockerized mailcow in a Debian server)

Dec 09 09:46:16 mail.mydomain.com kernel: br-mailcow: port 8(veth4a5cb20) entered forwarding state
Dec 09 09:46:16 mail.mydomain.com systemd-udevd[1120]: link_config: autonegotiation is unset or enabled, the speed and duplex are not writable.
Dec 09 09:46:16 mail.mydomain.com systemd-udevd[1120]: Could not generate persistent MAC address for veth4a5cb20: No such file or directory
Dec 09 09:46:16 mail.mydomain.com containerd[573]: time="2020-12-09T09:46:16.759945893-05:00" level=info msg="starting signal loop" namespace=moby path=/run/cont
Dec 09 09:46:16 mail.mydomain.com containerd[573]: time="2020-12-09T09:46:16.941871217-05:00" level=info msg="starting signal loop" namespace=moby path=/run/cont
Dec 09 09:46:17 mail.mydomain.com kernel: br-mailcow: port 9(vethae1d215) entered blocking state
Dec 09 09:46:17 mail.mydomain.com kernel: br-mailcow: port 9(vethae1d215) entered disabled state
Dec 09 09:46:17 mail.mydomain.com kernel: device vethae1d215 entered promiscuous mode
Dec 09 09:46:17 mail.mydomain.com kernel: IPv6: ADDRCONF(NETDEV_UP): vethae1d215: link is not ready
Dec 09 09:46:17 mail.mydomain.com kernel: br-mailcow: port 9(vethae1d215) entered blocking state
Dec 09 09:46:17 mail.mydomain.com kernel: br-mailcow: port 9(vethae1d215) entered forwarding state
Dec 09 09:46:17 mail.mydomain.com systemd-udevd[1120]: link_config: autonegotiation is unset or enabled, the speed and duplex are not writable.
Dec 09 09:46:17 mail.mydomain.com systemd-udevd[1120]: Could not generate persistent MAC address for vethae1d215: No such file or directory
Dec 09 09:46:17 mail.mydomain.com systemd-udevd[1175]: link_config: autonegotiation is unset or enabled, the speed and duplex are not writable.
Dec 09 09:46:17 mail.mydomain.com systemd-udevd[1175]: Could not generate persistent MAC address for vethd6b6f56: No such file or directory
Dec 09 09:46:17 mail.mydomain.com kernel: br-mailcow: port 8(veth4a5cb20) entered disabled state
Dec 09 09:46:17 mail.mydomain.com kernel: br-mailcow: port 9(vethae1d215) entered disabled state
Dec 09 09:46:17 mail.mydomain.com kernel: br-mailcow: port 10(veth06111a1) entered blocking state
Dec 09 09:46:17 mail.mydomain.com kernel: br-mailcow: port 10(veth06111a1) entered disabled state
Dec 09 09:46:17 mail.mydomain.com kernel: device veth06111a1 entered promiscuous mode
Dec 09 09:46:17 mail.mydomain.com kernel: IPv6: ADDRCONF(NETDEV_UP): veth06111a1: link is not ready
Dec 09 09:46:17 mail.mydomain.com kernel: br-mailcow: port 10(veth06111a1) entered blocking state
Dec 09 09:46:17 mail.mydomain.com kernel: br-mailcow: port 10(veth06111a1) entered forwarding state
Dec 09 09:46:17 mail.mydomain.com systemd-udevd[1120]: link_config: autonegotiation is unset or enabled, the speed and duplex are not writable.
Dec 09 09:46:17 mail.mydomain.com systemd-udevd[1120]: Could not generate persistent MAC address for veth06111a1: No such file or directory
Dec 09 09:46:17 mail.mydomain.com systemd-udevd[1175]: link_config: autonegotiation is unset or enabled, the speed and duplex are not writable.
Dec 09 09:46:17 mail.mydomain.com systemd-udevd[1175]: Could not generate persistent MAC address for veth7bfb0c1: No such file or directory
Dec 09 09:46:17 mail.mydomain.com containerd[573]: time="2020-12-09T09:46:17.921034153-05:00" level=info msg="starting signal loop" namespace=moby path=/run/cont
Dec 09 09:46:18 mail.mydomain.com kernel: cgroup: cgroup: disabling cgroup2 socket matching due to net_prio or net_cls activation
Dec 09 09:46:18 mail.mydomain.com systemd[1]: run-docker-runtime\x2drunc-moby-58cfe3239e02cfbe72d59103df2cc242806923f1794abb8aeeae40d453814f6b-runc.pYaIfh.mount:
-- Subject: Unit succeeded
-- Defined-By: systemd
-- Support: https://www.debian.org/support

I don’t hav much experience with Docker, so any help would be really appreciated

Thanks!