[Dovecot] Dovecot fails to deliver in mail clients

Morning

I am new to linux and have configured a Postfix + Dovecot Mail server on my SUSE Linux Server 10 SP2 Machine. Postfix works fine I assume as mail gets delivered to user's mailbox or directories. But when I configure a mail client to download mail from the server it finds no mail. When I check the user's mailbox using Webmin mail is delivered.

I have also tried to telnet to the server when I do I am able to log in with user's credentials but when I type the list or stat command telnet says there is no mail 0.0Kb. I have tried everything, mail gets delivered to inboxes but telnet and mail clients don't get mail.

Please let me know what I am doing wrong

Zwelabantu Ngwenya