[2.2.0] Checkmk Werk 16176 adapted: postfix: Fix Postfix status monitoring for agents run in Docker

Werk 16176 was adapted. The following is the new Werk, a diff is shown at the end of the message. Title: postfix: Fix Postfix status monitoring for agents run in Docker Class: fix Compatible: compat Component: checks Date: 1710323821 Edition: cre Level: 1 Version: 2.2.0p25 Previously, Checkmk agent used the data from /proc to determine if Postfix instance is running. Since docker containers don't have permissions to read /proc, the agent always reported the Postfix instance as 'not running'. This resulted in CRIT 'Postfix status' service even if Postfix instance was running correctly. ------------------------------------<diff>------------------------------------------- Title: postfix: Fix Postfix status monitoring for agents run in Docker Class: fix Compatible: compat Component: checks Date: 1710323821 Edition: cre Level: 1 - Version: 2.2.0p24 ? ^ + Version: 2.2.0p25 ? ^ Previously, Checkmk agent used the data from /proc to determine if Postfix instance is running. Since docker containers don't have permissions to read /proc, the agent always reported the Postfix instance as 'not running'. This resulted in CRIT 'Postfix status' service even if Postfix instance was running correctly.