0x8000000600 Error Code with Outlook 2007

A couple of days ago, a friend of mine came by to inquire regarding his Outlook 2007 application. Based on his statement, he can send mails but cannot receive incoming mails.
Moreover, it also encountered a cryptic error message (0X8000000600).
After several inquiries through Google, no helpful material was produced in regard to (0x8000000600) error.
While all sorts of traditional myth has also failed such as restarting the system and mail server (in his case – Mdaemon Standard 11).
With this, I came up to make use of PST file as I am confident that by making a fresh PST file would definitely fix the issue. I created it and set its status to be the default option to receive mails.
Kindly advise if my alternative solution is correct and the error will no longer occur in the future?
Thank you.
