Werk #12330: Disable Windows agent mail API tracing

Component	Checks & agents
Title	Disable Windows agent mail API tracing
Date	Sep 22, 2021
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.1.0b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT 2.0.0p12 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT

With this release Windows agent writes no more information in Users\Public\cmc_mail.log.

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