Dovecot malformed response

[makoshark]

Hello
I had followed the instructions found here: https://library.linode.com/email/pos...tu-10.04-lucid. I have no experience with setting up email so I am having a hard time figuring out what went wrong. I get this in my mail.warn log file

Jul 2 11:41:31 nilandsplace postfix/oqmgr[4028]: warning: private/dovecot socket: malformed response
Jul 2 11:41:31 nilandsplace postfix/oqmgr[4028]: warning: transport dovecot failure -- see a previous warning/fatal/panic logfile record for the problem description
Jul 2 11:41:31 nilandsplace postfix/master[4026]: warning: process /usr/lib/postfix/pipe pid 12512 exit status 1
Jul 2 11:41:31 nilandsplace postfix/master[4026]: warning: /usr/lib/postfix/pipe: bad command startup -- throttling

My mail is stuck in the postfix cue and is not forwarded to Dovecot. In my mail.log file I am getting:

Jul 2 12:01:31 nilandsplace postfix/oqmgr[4028]: warning: private/dovecot socket: malformed response
Jul 2 12:01:31 nilandsplace postfix/oqmgr[4028]: warning: transport dovecot failure -- see a previous warning/fatal/panic logfile record for the problem description
Jul 2 12:01:31 nilandsplace postfix/master[4026]: warning: process /usr/lib/postfix/pipe pid 12828 exit status 1
Jul 2 12:01:31 nilandsplace postfix/master[4026]: warning: /usr/lib/postfix/pipe: bad command startup -- throttling
Jul 2 12:01:31 nilandsplace postfix/error[12830]: AABAFA4395: to=<nilandjp@nilandsplace.com>, relay=none, delay=71742, delays=71740/1.5/0/0.01, dsn=4.3.0, status=deferred (unknown mail transport error)
Jul 2 12:01:31 nilandsplace postfix/master[4026]: warning: process /usr/lib/postfix/pipe pid 12829 exit status 1
Jul 2 12:01:31 nilandsplace postfix/oqmgr[4028]: warning: private/dovecot socket: malformed response
Jul 2 12:01:31 nilandsplace postfix/oqmgr[4028]: warning: transport dovecot failure -- see a previous warning/fatal/panic logfile record for the problem description
Jul 2 12:01:31 nilandsplace postfix/error[12830]: 79A77A4394: to=<support@nilandsplace.com>, relay=none, delay=71743, delays=71742/1/0/0, dsn=4.3.0, status=deferred (unknown mail transport error)

I see in other examples the relay should be relay=dovecot but is says none. Also I wanted to know what the user and group are for home/vmail, right now they are set owner vmail and group vmail. I set up the mail from the link and have been over it several times but still get this in my mail.err log:

Jul 2 12:21:30 nilandsplace postfix/pipe[13001]: fatal: get_service_attr: unknown username: vmail
Jul 2 12:21:30 nilandsplace postfix/pipe[13002]: fatal: get_service_attr: unknown username: vmail
Jul 2 12:21:30 nilandsplace postfix/pipe[13003]: fatal: get_service_attr: unknown username: vmail

I really don't have a clue as I have never set up mail before. I have never administered my own site before but I got it up and working
Thanks James