Similar to how it is done for pve-manager in PVE. If pvemailforward is
detected, nothing is done. An adapted pve-manager will cleanly handle
the switchover for PVE installations.
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
--- /dev/null
+#!/bin/sh
+
+set -e
+
+case "$1" in
+ configure)
+ # pve-manager is responsible for switching over, so skip when detecting pvemailforward
+ if ! test -f /root/.forward || ! grep -E -q '\|/usr/bin/(proxmox-mail-|pvemail)forward' /root/.forward; then
+ echo '|/usr/bin/proxmox-mail-forward' >>/root/.forward
+ fi
+ ;;
+
+ abort-upgrade|abort-remove|abort-deconfigure|triggered)
+ ;;
+
+ *)
+ echo "postinst called with unknown argument \`$1'" >&2
+ exit 1
+ ;;
+esac
+
+exit 0