doveadm

Hello list,

I'm interested in setting up dovecot replication but when I run the command doveadm user '*', which is necessary as indicated here: http://wiki2.dovecot.org/Replication, I get the following output:

Error: User listing returned failure Fatal: user listing failed

It also indicates the following on the wiki2: "Make sure that user listing is configured for your userdb, this is required by replication to find the list of users that are periodically replicated"

I use a vpopmail backup so the question is how do I "Make sure that user listing is configured for...userdb"?

This is my userdb settings for vpopmail:

userdb { args = cache_key=%u quota_template=quota_rule=*:backend=%q driver = vpopmail }

Thank-you

Eric