Mail is not working

I recently installed sendmail on my virtualmin run server and cannot get mail to work on any of my domains. When i check via any system, i get "connection refused messages. When I try to connect via Usermin, i get - "An error occurred listing mail in this folder : Failed to connect to localhost:143 : Connection refused"n

Here is my sendmail config file:

divert(-1)dnl
Other #-----------------------------------------------------------------------------
Other # $Sendmail: debproto.mc,v 8.14.2 2008-01-24 14:29:57 cowboy Exp $
Other #
Other # Copyright (c) 1998-2007 Richard Nelson. All Rights Reserved.
Other #
Other # cf/debian/sendmail.mc. Generated from sendmail.mc.in by configure.
Other #
Other # sendmail.mc prototype config file for building Sendmail 8.14.2
Other #
Other # Note: the .in file supports 8.7.6 - 9.0.0, but the generated
Other # file is customized to the version noted above.
Other #
Other # This file is used to configure Sendmail for use with Debian systems.
Other #
Other # If you modify this file, you will have to regenerate /etc/mail/sendmail.cf
Other # by running this file through the m4 preprocessor via one of the following:
Other # * make (or make -C /etc/mail)
Other # * sendmailconfig
Other # * m4 /etc/mail/sendmail.mc > /etc/mail/sendmail.cf
Other # The first two options are preferred as they will also update other files
Other # that depend upon the contents of this file.
Other #
Other # The best documentation for this .mc file is:
Other # /usr/share/doc/sendmail-doc/cf.README.gz
Other #
Other #-----------------------------------------------------------------------------
Other divert(0)dnl
Other #
Other # Copyright (c) 1998-2005 Richard Nelson. All Rights Reserved.
Other #
Other # This file is used to configure Sendmail for use with Debian systems.
Other #
Define define(_USE_ETC_MAIL_')dnl Other include(/usr/share/sendmail/cf/m4/cf.m4')dnl
Other VERSIONID($Id: sendmail.mc, v 8.14.2-2build1 2008-01-24 14:29:57 cowboy Exp $') OS Type OSTYPE(debian')dnl Other DOMAIN(debian-mta')dnl Other dnl # Items controlled by /etc/mail/sendmail.conf - DO NOT TOUCH HERE Undefine undefine(confHOST_STATUS_DIRECTORY')dnl #DAEMON_HOSTSTATS= Other dnl # Items controlled by /etc/mail/sendmail.conf - DO NOT TOUCH HERE
Other dnl #
Other dnl # General defines
Other dnl #
Other dnl # SAFE_FILE_ENV: [undefined] If set, sendmail will do a chroot()
Other dnl # into this directory before writing files.
Other dnl # If all your user accounts are under /home then use that
Other dnl # instead - it will prevent any writes outside of /home ! Other dnl # define(confSAFE_FILE_ENV',')dnl
Other dnl #
Other dnl # Daemon options - restrict to servicing LOCALHOST ONLY !!! Other dnl # Remove , Addr=' clauses to receive from any interface Other dnl # If you want to support IPv6, switch the commented/uncommentd lines Other dnl # Feature FEATURE(no_default_msa')dnl
Other dnl DAEMON_OPTIONS(Family=inet6, Name=MTA-v6, Port=smtp, Addr=::1')dnl Other DAEMON_OPTIONS(Family=inet, Name=MTA-v4, Port=smtp, Addr=127.0.0.1')dnl
Other dnl DAEMON_OPTIONS(Family=inet6, Name=MSP-v6, Port=submission, Addr=::1')dnl Other DAEMON_OPTIONS(Family=inet, Name=MSP-v4, Port=submission, Addr=127.0.0.1')dnl
Other dnl #
Other dnl # Be somewhat anal in what we allow Other define(confPRIVACY_FLAGS',dnl Otherneedmailhelo,needexpnhelo,needvrfyhelo,restrictqrun,restrictexpand,nobodyreturn,authwarnings')dnl
Other dnl #
Other dnl # Define connection throttling and window length
Define define(confCONNECTION_RATE_THROTTLE',15')dnl Define define(confCONNECTION_RATE_WINDOW_SIZE',10m')dnl
Other dnl #
Other dnl # Features
Other dnl #
Other dnl # use /etc/mail/local-host-names
Feature FEATURE(use_cw_file')dnl Other dnl # Other dnl # The access db is the basis for most of sendmail's checking Feature FEATURE(access_db', , skip')dnl Other dnl # Other dnl # The greet_pause feature stops some automail bots - but check the Other dnl # provided access db for details on excluding localhosts... Feature FEATURE(greet_pause', 1000')dnl 1 seconds Other dnl # Other dnl # Delay_checks allows sender<->recipient checking Feature FEATURE(delay_checks', friend',n')dnl
Other dnl #
Other dnl # If we get too many bad recipients, slow things down...
Define define(confBAD_RCPT_THROTTLE',3')dnl
Other dnl #
Other dnl # Stop connections that overflow our concurrent and time connection rates
Feature FEATURE(conncontrol',nodelay', terminate')dnl Feature FEATURE(ratecontrol', nodelay',terminate')dnl
Other dnl #
Other dnl # If you're on a dialup link, you should enable this - so sendmail
Other dnl # will not bring up the link (it will queue mail for later) Other dnl define(confCON_EXPENSIVE',True')dnl
Other dnl #
Other dnl # Dialup/LAN connection overrides
Other dnl #
Other include(/etc/mail/m4/dialup.m4')dnl Other include(/etc/mail/m4/provider.m4')dnl
Other dnl #
Other dnl # Default Mailer setup
Other MAILER_DEFINITIONS
Mailer MAILER(local')dnl Mailer MAILER(smtp')dnl

Any help would be appreciated!