[Dovecot] Plain password not authenticating

[Anne Wilson]

I'm trying to set up a temporary mailserver using Debian Sarge and 
Dovecot 1.0 with maildir format.  My only previous experience has been 
on a simple imap server.

I have read the wiki documentation and searched the archives, but can't 
tie down my problem.  The log tells me

Info: passwd-file(anne) : unknown user.

I have set 
auth_userdb = passwd-file /etc/imap.passwd
auth_passdb = passwd-file /etc/imap.passwd

and created the /etc/imap.passwd file as
anne:{plain}mypassword:1000:1000::/home/anne

What have I missed?

Anne
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Registered Linux User No.293302 (http://counter.li.org/)