[Dovecot] deliver fails - passdb doesn't support lookups?

Hello,

I'm trying to get deliver (the LDA) to function properly. I can get it to work without doing a user lookup, but for my own sense of sanity, I want to know what I'm doing wrong getting user lookups working. (I'm using dovecot 1.0.10).

Here's what I have in the "auth default" section:

 auth default {
     mechanisms = plain login
     passdb ldap {
         args= /var/lib/dovecot/dovecot-ldap.conf
     }
     userdb static {
         args = uid=3728 gid=3728 home=/domains/%Ld/%Ln
     }
     user = vpopmail
     socket listen {
         master {
             path = /var/run/dovecot/auth-master
             mode = 0600
             user = vpopmail
             group = vchkpw
         }
         client {
             path = /var/run/dovecot/auth-client
             mode = 0660
         }
     }
 }

And yet, when I run deliver, I get no warnings, no errors, and most especially, no email delivered. Here's how I call deliver:

 cat testemail | setuidgid vpopmail \
     /usr/local/libexec/dovecot/deliver \
     -d testuser@example.com

I tried running deliver within strace, and here's what I found. It opens up the authentication socket and writes:

 VERSION\t1\t0\nUSER\t1\ttestuser@example.com\tservice=deliver\n

And it gets back:

 VERSION\t1\t0\nSPID\t10917\nFAIL\t1\n"

If I understand the authentication protocol correctly, that means an internal error occurred.

The dovecot log file reports this:

 Error: auth(default): static(testuser@example.com): passdb doesn't
 support lookups, can't verify user's existence

passdb? I thought it was the userdb that was important! What's going on here?

~Kyle

Men, as an organization, are getting more women than any other group working anywhere in the world. Wherever women are, we have men looking into it. -- Jerry Seinfeld