See this first:
http://insideoe.tomsterdam.com/problems/errors.htm#foldersdbx
If compacting does not resolve the problem, read the consequences, and
follow the directions below.
0x800c0131: Damaged or missing folders.dbx file
Symptoms
You are unable to send email, and you receive the following message:
Unknown error has occurred. Protocol: SMTP Port: 0 Secure: No [SSL] Error:
0x800c0131
Cause
This behavior can occur if the Folders.dbx file is missing, damaged, or
using the read-only attribute.
Resolution
Rename the Folders.dbx file:
1. Click Start, point to Find, and then click Files or Folders.
2. In the Named box, type folders.dbx.
3. In the Look In box, click your primary hard disk (usually drive C), and
then click Find Now.
4. Right-click the Folders.dbx file, and then click Rename.
5. Type folders.old, and then click OK.
6. Start Outlook Express. This creates a new Folders.dbx file automatically.
For more information on this issue, consult Microsoft's knowledge base
article:
Microsoft Knowledge Base Article Q233264
http://support.microsoft.com/default.aspx?scid=http://support.microsoft.com:80/s
upport/kb/articles/q233/2/64.asp&NoWebContent=1

Signature
Bruce Hagen
MS MVP - Outlook Express
~IB-CA~
> Greetings OE fans! Another Monday! Yippeeee!!!!
>
[quoted text clipped - 15 lines]
>
> Fred
Fred - 10 Apr 2006 23:30 GMT
Compacting worked, Bruce! Thanks a lot.
> See this first:
> http://insideoe.tomsterdam.com/problems/errors.htm#foldersdbx
>
> If compacting does not resolve the problem, read the consequences, and
> follow the directions below.
Bruce Hagen - 10 Apr 2006 23:36 GMT
You're welcome. Thanks for posting back.

Signature
Bruce Hagen
MS MVP - Outlook Express
~IB-CA~
> Compacting worked, Bruce! Thanks a lot.
>
[quoted text clipped - 3 lines]
>> If compacting does not resolve the problem, read the consequences, and
>> follow the directions below.
Fred - 12 Apr 2006 21:58 GMT
And now....as a token of my appreciation.... a follow-up question..... :OD
All are compacted, and worked fine for a couple of days. Now, when I go to
open one of the folders that I send most of my incoming mail to, I cain't
open it. I'm guessing that it's at capacity. I can compress all the
folders, and then access it, but only a couple of times.
I can't delete the emails in it, so I'm thinking that I should move it to
another drive. How do I do that?
Fred
> You're welcome. Thanks for posting back.
> > Compacting worked, Bruce! Thanks a lot.
[quoted text clipped - 4 lines]
> >> If compacting does not resolve the problem, read the consequences, and
> >> follow the directions below.
Bruce Hagen - 12 Apr 2006 22:16 GMT
Moving to another drive isn't the current problem. Can you create a new
folder(s) and move messages to them? Split them up and don't exceed 100MB
for each folder.
Do not archive mail in default OE folders and empty Deleted Items folder
regularly. Keep user created folders under 100MB, and Default folders as
empty as is feasible.
When you have it sorted out, what many people do is to create a new identity
for the sole purpose of archiving. Unless your current drive is almost to
its capacity, moving to another drive won't accomplish much.
The most important thing you can do is to back up OE regularly.
Backup and Restore:
http://www.insideoutlookexpress.com/backup/
http://www.oehelp.com/backup.aspx
http://www.oehelp.com/OEBackup/Default.aspx

Signature
Bruce Hagen
MS MVP - Outlook Express
~IB-CA~
> And now....as a token of my appreciation.... a follow-up question.....
> :OD
[quoted text clipped - 18 lines]
>> >> If compacting does not resolve the problem, read the consequences, and
>> >> follow the directions below.