I get an error 0x800ccc0d or 0x800ccc0f when sending or receiving email in Outlook Express or Outlook

DiscountASP.NET > Email > Troubleshooting email problems and errors
Symptoms

When you attempt to send or receive email, you see one of the following error messages.

-The server could not be found. (Account:account name, POPserver:'mail', Error Number: 0x800ccc0d)

- Task 'server name - Sending and Receiving' reported error (0x800ccc0f): 'The connection to the server was interrupted. If this problem continues, contact your server administrator or Internet service provider (ISP). The server responded: ? K'

- Your server has unexpectedly terminated the connection. Possible causes for this include server problems, network problems, or a long period of inactivity. Account. account name, Server: 'server name', Protocol: POP3, Server Response: '+OK', Port: 110, Secure(SSL): N0, Error Number: 0x800ccc0f

Assumption

You have confirmed that your email settings in Outlook or Outlook Express are correct.

Possible solution 1:

You have a firewall. The firewall may be causing this error. Configure your firewall software to grant access to the Internet for the following files.

For Outlook Express: Msimn.exe
For Outlook: Outlook.exe
By default, most e-mail clients have to have outbound access on port 110 and inbound access on port 25.

Possible solution 2:

You have enabled Norton antivirus email feature. Please review this Symantec support article.

Possible solution 3:

Your ISP has blocked port 25 for outgoing mail. This is becoming quite common, so we also provide outgoing mail service on port 587. If you have ruled out anti-virus or firewall interference, try changing your SMTP setting from port 25 to 587.