Werk #15472: check_mail_loop, check_mail: Fix argument parsing

Component Checks & agents
Title check_mail_loop, check_mail: Fix argument parsing
Date May 5, 2023
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed
Checkmk versions & editions
2.3.0b1 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)
2.2.0b8 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)
2.1.0p28 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

check_mail_loop and check_mail active checks didn't accept "POP3" as a fetch protocol argument.

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