[Ubuntu-zh] ubuntu mail server

[Qiuli Han]

hi
i am trying to setup an ubuntu based mail server with postfix and imap,
and i was following
http://flurdy.com/docs/postfix/
i realized that this is way too much for my reqiurments
all i needed is some virtual users, all the users are in the same domain
no virtual domains are needed
but all the HOWTO i can find are all about virtual domains...
is there any good HOWTO i can follow?

on the other hand
i can make postfix work, but i just cant make imap authentication
work, the users in the intranet can not login to get their mails, and
it seems that they are able to send mail within the domain, but not
able to send mails to the outside ( cant send to Gmail "554
<ivyharry at gmail.com>: Relay access denied").
for postfix i configured to use my ISP's mail server to send all the mails
will this be the problem?