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Show mail users currently logged in to Dovecot

harmless rootMaildebian, ubuntu
root@server
doveadm who

Lists all active IMAP and POP3 sessions, grouped by user, with number of connections, protocol and IP addresses. Useful when clients are rejected because of too many simultaneous connections or an account is being used from unknown IPs.

Also searched as

  • who is connected via imap
  • too many imap connections
  • dovecot show active sessions

Related one-liners

All in Mail

Regenerate the mail configuration in Plesk (mchk)

#plesk sbin mchk --with-spam
cautionMail

Delete a single message from the Postfix queue

#postsuper -d 4F2A31C0E12
destructiveMail

Delete all deferred mail from the Postfix queue

#postsuper -d ALL deferred
destructiveMail

Delete all mail from one sender in the Postfix queue

#postqueue -p | awk -v s="info@example.com" '/^[0-9A-Za-z]/ && $7 == s {print $1}' | tr -d '*!' | postsuper -d -
destructiveMail

Find a hacked mail account by its SMTP logins

#grep -o "sasl_username=[^ ,]*" /var/log/maillog | sort | uniq -c | sort -rn | head -20
harmlessMail

Find permanently rejected emails in the mail log

#grep "status=bounced" /var/log/maillog | tail -n 20
harmlessMail

Read first, then run.

The commands on myline.de act directly on servers, files and databases. A wrong path or placeholder can delete data irreversibly or make a server unreachable.

  • All commands are provided without warranty and are not tested on every system.
  • Understand what a command does before running it, and check every placeholder.
  • Make a backup first and, if possible, try it on a test system.
  • You run commands at your own risk. Liability for damages is excluded to the extent permitted by law.