Dovecot Denies Access

[RobinVossen]

I try to setup Dovecot using Squirrelmail as frontend.
But it keeps Dropping me
This is what the log says:

dovecot: Jan 07 14:46:28 Error: auth(default): userdb(john,::ffff:127.0.0.1): user not found from userdb
dovecot: Jan 07 14:52:07 Error: auth(default): userdb(john,::ffff:127.0.0.1): user not found from userdb
dovecot: Jan 07 14:55:31 Error: auth(default): userdb(john,::ffff:127.0.0.1): user not found from userdb
dovecot: Jan 07 14:57:29 Error: auth(default): userdb(test,::ffff:127.0.0.1): user not found from userdb
dovecot: Jan 07 14:57:58 Error: auth(default): userdb(john,::ffff:127.0.0.1): user not found from userdb

So I go the my userdb (/etc/dovecot/passwd) and I see the following:

john:{PLAIN}secret
test:{PLAIN}test

Umm, so the Database has the user in there.
What happens if I enter a wrong username and wrong password..
The following:
I dont get a new Record in the Dovecot Log file.
And I get Access Denied from SquirrelMail and not from Dovecot.
Ok well lets Review my Config "/etc/dovecot/dovecot.conf"

  passdb passwd-file {
    # File contains a list of usernames, one per line
    args = /etc/dovecot/passwd
    deny = no
  }

Does anyone have a Clue what I do wrong?
And how to fix it?
Since well, I kinda need Dovecot really quick.
I dont get this error :S

Cheers,
Robin

[RobinVossen]

Whaa, I still cant get in..
I use another Front-End now.
I use Horde.
But, well still error. The same..
Anyone who can help me with Dovecot?

Cheers,
Robin

Edit:
If I connect to Dovecot using netcat and I send:

a01 login john secret

I do get in..