How come I get the following error message? How can I fix it?
Protocol: SMTP, Port: 25, Secure(SSL): No, Error Number: 0x800CCC0B
In certain cases you may see the following error in your email client settings. In Outlook 2002 this is a bug in the application, which normally can be resolved by doing the following steps:
- Closing the Outlook application
- Starting the Outlook Application
This is not a server side error and is caused by a mis-configuration of the email client. Some ISP’s block access to port 25 and some related issues that could cause this is: using port 26 instead of port 25 or a DNS problem with your ISP.
To confirm that the mail server is online and responding, you can do the following steps:
- Within Windows Click “Start”
- Then “Run”
- Type in “CMD” and hit “Enter” on your keyboard
- In the black window, please type: “telnet yourdomain 25”
- You should get something like is displayed below:
220-yourdomain.com ESMTP Exim 4.52 #1 Wed, 23 Aug 2006 19:26:11 -0400 220-We do not authorize the use of this system to transport unsolicited,
220 and/or bulk e-mail.
- If you get something like the above, this means that the mail server is working fine.
We will try to see if the POP server is working.
- Now, please close this window, and repeat steps 1 – 2 again.
- In this box, please type: “telnet yourdomain.com 110”
- You should get something like what is noted below
+OK POP3 [cppop x.x] at [xx.xx.xx.xx] (yourdomain.com)
4. This means that there is no error with the POP server.
Additional Resources: