[Dovecot] deliver setgid issues

[Brad]

Okay .. have dovecot set up with following settings :

userdb static {
    
      args = uid=97 gid=97 home=/export/dovecot/mail/%d/%u
mail=mbox:/export/dovecot/mbox/%d/%u/ 
    }


passdb passwd-file {
    # Path for passwd-file
    args = /etc/dovecot-passdb 
  }

Passdb works I think in the sense that I can log into dovecot using a
regular mail client.

The real issue is when I try to deliver any type of mail using
dovecot-lda (deliver).

deliver is setuid and setgid dovecot .. I event se the static mail dirs
above to be owned by dovecot (I know .. a no no .. but wanted to trace
down issue)

I also have

first_valid_uid = 96

and 

first_valid_uid = 96


Now .. when I try to do this .. 


 echo "A Test Message" | /usr/local/libexec/dovecot/deliver -d
existinguser


I get this ..

master in: USER   1       echo    service=deliver
dovecot: Mar 11 23:45:24 Info: auth(default): master out: USER  1
echo    uid=97  gid=97  home=/export/dovecot/mail//echo
mail=mbox:/export/dovecot/mbox//echo/
dovecot: Mar 11 23:45:24 Error: auth(default): 
deliver: Fatal: setgroups(97) failed: Operation not permitted


97 is the gid for the dovecot user .. which owns just about everything
deliver could ever touch.

What am I missing ?