[Dovecot] POP3 problem

[michal]

Hey all this is my first post to this list.
I have fresh Red Hat AS 4.0 with postfix 2.1. This will be my mail server.
I have one problem with pop3. My mail server is working properly. I did the following test:
Sent an email to some other server(yahoo.com)->email got there fine.
>From that other server(yahoo.com) replaied-> to the new server and email got there fine,checked using pine.
Now in x windows on the mail server if i lunch email client software and set up the account, then i can send and receive emails fine so pop3 is working. But when i go to different machine like PC set up outlook then i cannot receive emails. I get error in outlook that the connection has failed. So i telnet 192.168.1.10 110 and I have gotten response from the server 
250 dovecot OK. I really dont what to do at this time. I have been trying couple different things without any luck..... need some help?
Mike
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