[Dovecot] (re: B. Baca 2) Dovecot] Unexpected input from auth master: CUID

[Jerry Yeager]

Also check the top of Authentication processes section:

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## Authentication processes
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# Executable location

auth_executable = /path/to/libexec/dovecot/dovecot-auth

smime.p7s
Description: S/MIME cryptographic signature