Courier IMAP/POP3 services cannot be started: courierlogger dead but pid file exists

Created:

2017-04-13 09:06:57 UTC

Modified:

2017-08-08 13:45:11 UTC

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Courier IMAP/POP3 services cannot be started: courierlogger dead but pid file exists

Applicable to:

  • Plesk for Linux

Symptoms

It is not possible to send/receive emails with the following error in mail client:

5.7..8 Error: authentication failed: authentication failure Your username/password or security settings may be incorrect

Also, it is not possible to log to any webmail (Horde, Roundcube)

Username or password invalid

Courier services are stopped in Home > Tools & Settings > Services Management

Attempt to start any Courier service fails with the error:

# /etc/init.d/courier-imapd status
courierlogger dead but pid file exists

Cause

Stuck courierlogger processes prevent Courier services to start properly.

Resolution

  1. Find hanged courierlogger processes:

    # ps aux | grep courierlogger
    
  2. Terminate them using kill -9 command:

    # kill -9 <PID>
    
  3. Start Courier IMAP/POP3 services from Plesk UI Home > Tools & Settings > Services Management

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