[Dovecot] verbose IMAP logging

Hi,

Is there a way to enable telemetry or debug-level logging in Dovecot
IMAP, to see the exact IMAP command issued by the client and server?
E.g. to confirm if a certain MUA is indeed using IMAP IDLE, or if
it's doing LIST or LSUB.

The IMAP connection is made over TLS/SSL, so tcpdump won't work.

Thanks, Robert