doveadm -A finds non existent users

Hi,

I am trying to iterate through all users using "doveadm sieve list -A" and I am seeing a lot of messages like this one:

doveadm(someuser): Info: User no longer exists, skipping

When I do "doveadm sieve list -u someuser" I get the following:

doveadm(someuser): Error: User doesn't exist

I have defined LDAP as my userdb and "someuser" is not present in the LDAP anymore. Where does doveadm -A get this user from and how can I clean this up?

Thanks Julian