@sharif On my VM apt update also don't get errors and mtr show that server reachable: root@mail0:~# apt update Hit:1jammy InRelease Get:2jammy-u...

The repository have certificate from Amazon, and servers of repository is Amazons too? May be this is a problem?

previous post with links root@mail0:~# cat / etc / apt / sources.list.d / zextras.list deb [arch=amd64 signed-by=/ usr / share / keyrings / zextras...

@sharif , thank you for try to help root@mail0:~# lsb_release -aNo LSB modules are available.Distributor ID: UbuntuDescription: Ubuntu 22.04.5 LTS...