On Wed, 10 Sep 2014, Clovis Tristao writes:

userdb { args = allow_all_users=yes master_user=%u driver = static } ...

I still can not authenticate with the master user, any suggestions or tips?

Just a wild-ass guess, but shouldn't "master_user=%u" be something like "master_user=muser" where "muser" is the master user as defined in your master password file?

Joseph Tam <jtam.home@gmail.com>