Mail Server Assistance and Help

I have a few questions here and a couple of issues.

Postfix 2.3.3
Courier POP / IMAP
ISPCONFIG 2.2.9

Question 1.
Do I have to maunally create the "maildir" for every new Site I add? And is the Location of the Maildir in "var/www/web1" or in the Users home directory, "/var/www/web1/user/web1_user1/"?

I have no problems setting up the POP, which everything is working fine, no problems receiving...

I can create IMAP accounts, no problems authenticating, but they do not receive E-mails, in Webmail and in OE....
The E-mails sent to the to the pop account do NOT show up either in webmail.

I get this message when Telnetting into the IMAP Server:
telnet> open 192.168.2.9 143
Trying 192.168.2.9...
Connected to 192.168.2.9.
Escape character is '^]'.
* OK [CAPABILITY IMAP4rev1 UIDPLUS CHILDREN NAMESPACE THREAD=ORDEREDSUBJECT THREAD=REFERENCES SORT QUOTA IDLE ACL ACL2=UNION STARTTLS] Courier-IMAP ready. Copyright 1998-2005 Double Precision, Inc. See COPYING for distribution information.

I've made sure that I have opened Port 143 on the IPCONFIG firewall and My Router but still no difference.

My output from netstat -tap:

Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 localhost:2208 *:* LISTEN 3 879/hpiod
tcp 0 0 localhost:51524 *:* LISTEN 3 888/python
tcp 0 0 *:mysql *:* LISTEN 4 014/mysqld
tcp 0 0 *:10000 *:* LISTEN 5 100/perl
tcp 0 0 *:81 *:* LISTEN 4 689/ispconfig_http
tcp 0 0 localhost:ipp *:* LISTEN 1 5414/cupsd
tcp 0 0 *:smtp *:* LISTEN 4 93/master
tcp6 0 0 *:imaps *:* LISTEN 4 147/couriertcpd
tcp6 0 0 *op3s *:* LISTEN 4 186/couriertcpd
tcp6 0 0 *op3 *:* LISTEN 4 162/couriertcpd
tcp6 0 0 *:imap2 *:* LISTEN 4 125/couriertcpd
tcp6 0 0 *:www *:* LISTEN 1 5381/apache2
tcp6 0 0 *:ftp *:* LISTEN 3 72/proftpd: (accep
tcp6 0 0 *:ssh *:* LISTEN 4 434/sshd
tcp6 0 0 *:smtp *:* LISTEN 4 93/master
tcp6 0 0 *:https *:* LISTEN 1 5381/apache2
ESTABLISHED2 0097/0

Here are my postconf -n stats:

alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
append_dot_mydomain = no
biff = no
broken_sasl_auth_clients = yes
config_directory = /etc/postfix
home_mailbox = Maildir/
inet_interfaces = all
inet_protocols = all
mailbox_command =
mailbox_size_limit = 0
mydestination = /etc/postfix/local-host-names
mynetworks = 127.0.0.0/8,192.168.2.0/24,24.215.88.2/32
myorigin = /etc/mailname
recipient_delimiter = +
relayhost = smtp.eastlink.ca
smtp_tls_note_starttls_offer = yes
smtp_tls_session_cache_database = btree:${queue_directory}/smtp_scache
smtp_use_tls = yes
smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination
smtpd_sasl_auth_enable = yes
smtpd_sasl_local_domain =
smtpd_sasl_security_options = noanonymous
smtpd_tls_CAfile = /etc/postfix/ssl/cacert.pem
smtpd_tls_auth_only = no
smtpd_tls_cert_file = /etc/postfix/ssl/smtpd.crt
smtpd_tls_key_file = /etc/postfix/ssl/smtpd.key
smtpd_tls_loglevel = 1
smtpd_tls_received_header = yes
smtpd_tls_session_cache_database = btree:${queue_directory}/smtpd_scache
smtpd_tls_session_cache_timeout = 3600s
smtpd_use_tls = yes
tls_random_source = dev:/dev/urandom

Can anyone help me out here?
Thanks!

 

Thanks for the replay, actually right after posting I checked the "Maildir" option which solved my first question.
I still can't figure out whats wrong with the IMAP Server.