Thanks for the reply. 

Actually my question is, is it possible to verify anything now whether the email has been pulled by application/server from the "Maildir/new" or "Maildir/cur" folder in my POP3 server? at present I am not using lmtp yet. 

When I configured the outlook to access the one of the email box in the server, I get the email. But do we have any log in POP3 server, stating the email has been to sent to Outlook?

Thanks & Regards,

Kishore Potnuru