If not, you can run "set config ADMINP_VERBOSE_POLL_TASK=2"  at the Domino administrator console, restart the adminp task, and then re-run "tell adminp process mail policy".  Also, try running the command against a specific mail file to see if it works. 

@Jay  thank  you  for your answer  I will  try  this and let you know if it works

@Mark  it's just a typing error   the right error from  the server console  is  " [13178:00007-3828893440] 11/16/2016 10:08:22 AM  Admin Process: Path: names.nsf: Unable to interpret Time or Date"

Hello Jay

I added the parameter the the server notes.ini file and restart the server  and also  try  to  aply  the policy to a specific mail file but I always have the same error

Regards.