How to setup pop3 services for my virtual domains user

[System Administrator]

>

HI all,
    i'm using vpopmail to create my virtual domain and also sqwebmail to access user 
emails.
the sqwebmmail works fine.

i'm trying to use pop3 from netscape mail.
pop3 stream tcp nowait root /var/qmail/bin/qmail-popup qmail-popup mars.mydomain.com 
/user/vpopmail/bin/vchkpw /var/qmail/bin/qmail-pop3d Maildir

the problem is that when i run simple test
i telnet to port 110 and run simple pop3  ,test it works, but when using
pop3 via browser it's not working.

can someone help me.