Dovecot issue

gistfile1.txt

I don't think dovecot is working properly.  
I wonder if the version of the instructions (Ubun10) doesn't match any updates to this software.  
E.g. I am running these steps against Ubuntu 12.04.   Everything seemed to work except for the dovecot steps.  

This command failed, 

telnet localhost pop3

brazil:/var/log$ telnet localhost pop3
Trying 127.0.0.1...
telnet: Unable to connect to remote host: Connection refused

Here are the steps I ran.
http://library.linode.com/email/postfix/dovecot-mysql-ubuntu-10.04-lucid

OS: Ubuntu 12.04

brazil:/var/log$ sudo service dovecot restart
stop: Unknown instance: 
dovecot start/running, process 17424
----

Here are the error messages:

Jan 22 23:36:16 brazil dovecot: master: Dovecot v2.0.19 starting up (core dumps disabled)
Jan 22 23:36:16 brazil dovecot: ssl-params: Generating SSL parameters
Jan 22 23:36:20 brazil dovecot: ssl-params: SSL parameters regeneration completed
Jan 22 23:58:56 brazil dovecot: log: Warning: Killed with signal 15 (by pid=1 uid=0 code=kill)
Jan 22 23:58:56 brazil dovecot: master: Warning: Killed with signal 15 (by pid=1 uid=0 code=kill)


Differences in the /etc/dovecot.  The documentation mentions dovecot-sql.conf but the listing here is dovecot-sql.conf.ext.  Should I use dovecot-sql.conf what about the other files?

conf.d            dovecot-db.conf.ext        dovecot-sql.conf.bak
dovecot.conf      dovecot-dict-sql.conf.ext  README
dovecot.conf.bak  dovecot-sql.conf