Impossible to delete messages from cli

[sirio81]

I get the ids from a query like

zmmailbox -z -m valerio search -l 10 'before:"01/01/2011"'

This is a message before 2010

zmmailbox -z -m valerio deleteMessage 4983
ERROR: mail.NO_SUCH_MSG (no such message: 4983)

This is a message of 2011

zmmailbox -z -m valerio getMessage 188772
ERROR: mail.NO_SUCH_MSG (no such message: 188772)

I try to delete it

zmmailbox -z -m valerio deleteMessage 188772

it did it!.



Another message of 2011

zmmailbox -z -m valerio getMessage 19150
ERROR: mail.NO_SUCH_MSG (no such message: 19150)

It seems to not exist...again. I try to delete it...

zmmailbox -z -m valerio deleteMessage 19150
ERROR: mail.NO_SUCH_MSG (no such message: 19150)

and it doesn't.


Any idea?
Why it never get the message and why they do not always get deleted?

Please, watch also this

Release 6.0.9_GA_2686.RHEL5_64_20101115233514 CentOS5_64 FOSS edition