Multiple issut to resolve, ( empty trash, corrupted database, daily basis corruption)

a client have 10 em client v.6 latest update users , an   mdaemon server , multiple users have the same email
problems are:

  • can’t empty trash it will stuck forever
  • database corruption on daily basis even when creating new one
    any help

note that: All emclients are licensed since each user have more than 3 accounts