This usually happens because of one of the following reasons:
1. A piece of mail is corrupted
2. You have too much mail in your box
3. Someone sent you a large attachment
4. The email download was stopped by some interuption.
To correct this, do the following:
1. You will need to ftp to your site and go to the /var/spool/mail/ directory.
2. You will see a file called "admin" or whatever the POP account is named, and usually a file named
".admin.pop" This is the mail file for that account. Find which file has the data in it. One will be a zero byte file, the other will have data inside of it.
3. You will need to download the file with data inside in ASCII mode. Then open it up in a text editor to read the mail.
4. Also, delete both files off of the server once you have downloaded it. This will solve the problem.
