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Werk #16375: Rule "Check Email": Allow all makros

Component Checks & agents
Title Rule "Check Email": Allow all makros
Date Jan 15, 2024
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed
Checkmk versions & editions
2.3.0b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT
2.2.0p20 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT
2.1.0p39 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT

The ruleset "Check Email" recently featured stricter validation. As a result, macros (like $HOSTNAME$) could not be used anymore. This was partially compensated for in #15203, but this was still too restrictive. Users can now configure validated host adresses or unvalidated strings containing macros.

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