Werk #19220: Exchange DAG: crash on empty agent section

Component	Checks & agents
Title	Exchange DAG: crash on empty agent section
Date	Jul 7, 2026
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	3.0.0b1 Not yet released Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT 2.5.0p9 Not yet released Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

The Exchange DAG check plugin crashed with an IndexError during parsing when the msexch_dag agent section was present but contained no data lines.

This has been fixed.

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