[PVE-User] apparmor problem with postfix

[Dietmar Maurer]

> pveversion -v
> proxmox-ve: 4.1-26 (running kernel: 4.2.6-1-pve)
> pve-manager: 4.1-1 (running version: 4.1-1/2f9650d4)
> pve-kernel-4.2.6-1-pve: 4.2.6-26

Please update the kernel.