Outlook Express 2Gb limit problem.
How to fix Outlook Express dbx 2Gb limit problem.
Outlook Express stores emails in special files with .DBX extension. Every Outlook Express folder has its own file with DBX extension. For example,Inbox folder has a corresponding Inbox.dbx file, Outbox folder has a corresponding Outbox.dbx file and so on. There is a 2Gb limit for every DBX file and that can cause some serious problems. The matter is that the users often use e-mail nowadays to exchange different files with each other. As a rule, these are documents, photos, music, videos, program files, etc. All these files are of big size and your mailbox can eventually reach the 2Gb limit.
When Outlook Express folder reaches its 2Gb limit you can't place any messages in it anymore
Follow this tutorial on how to fix the problem.
http://www.wintips.org/fix-outlook-express-2gb-limit-problem-cannot-send-or-receive-email/