Which doveadm sub-command displays a list of connections of Dovecot in the following format?

The doveadm who sub-command shows information about the currently connected users and their sessions. The output includes the following columns:

user: The username of the connected user.

ip: The IP address of the client.

port: The port number of the client.

service: The name of the Dovecot service, such as imap, pop3, lmtp, etc.

protocol: The protocol version used by the client, such as IMAP4rev1, POP3, etc.

pid: The process ID of the Dovecot process that handles the connection.

type: The type of the connection, such as tcp, ssl, etc.

state: The state of the connection, such as running, idle, etc.

since: The time when the connection was established.

References:

doveadm-who - Dovecot Wiki

LPIC-2 exam 202 objectives, topic 211.3, “Managing Mailbox Access”