Message is locked

When trying to remove an email from the queue you get:

# exiqgrep -o 86400 -i | xargs exim -Mrm
Message 1O8o3N-0000Gc-K8 is locked

 Solution, stop exim, remove that specific email and start exim again.

# /etc/init.d/exim stop
Shutting down exim:                                        [  OK  ]
Shutting down spamd:                                       [  OK  ]

# exim -Mrm 1O8o3N-0000Gc-K8
Message 1O8o3N-0000Gc-K8 has been removed

# /etc/init.d/exim start
Starting exim:                                             [  OK  ]