Increasing file cmk_mail.log on all monitored Windows systems

CMK version: 2.0.0p18 (CEE)
OS version: Windows Server 2012 R2, Windows Server 2016

Error: We have a file C:\Users\Public\cmk_mail.log on all monitored Windows systems which is constantly getting bigger. On some systems it is already >1GB. It contains very much logging, which seems to be always the same:

2021-03-31 13:31:26.912 Mail slot "\\.\mailslot\Global\WinAgent_0" was opened
2021-03-31 13:32:27.306 Mail slot "\\.\mailslot\Global\WinAgent_0" was opened
2021-03-31 13:32:27.370 Mail slot "\\.\mailslot\Global\WinAgent_0" was opened
2021-03-31 13:32:27.526 Mail slot "\\.\mailslot\Global\WinAgent_0" was opened
2021-03-31 13:32:27.553 Mail slot "\\.\mailslot\Global\WinAgent_0" was opened

The file is accessed by check_mk_agent.exe, so I guess it is created and used by checkmk.

Does anybody know what this file is for and why it is getting so big?

Best regards,
UT2019

That is a question for @SergejKipnis :wink:

Nobody an idea what this is about?

Did you find a solution for this problem? I am struggeling with exactly the same situation right now and i don’t know how to fix it. Thanks in advance :slight_smile:

No, I did not find a solution and sadly actually nobody replied, so I delete those files manually when they get too big.