Outlook Express Troubleshooting

Hi User Deleted,
Your error number means it cannot connect to the server.
The client connects to a port that is blocked or unavailable on the mail server. If the client is attempting to send a message, the blocked port is 25, and if the client is attempting to retrieve a message, the blocked port is 110. Refer to the error message for the protocol and port numbers
Solution that can fix the problem:
Open a command prompt on the Exchange Server computer. You need to modify the command promptproperties, because the data scrolls off the screen. Open the command prompt, right-click the upper-left corner of the window, and then click Properties. Click the Layout tab, and then change the screen buffer size to 1,000. Apply the change. You are prompted to either modify the current window or the shortcut that you used to start the command prompt. You can modify the shortcut for future convenience.
At the command prompt, type netstat -an. Scroll back to the beginning of the data output, and look for the following entries.
Proto Local Address
TCP 0.0.0.0:25
Foreign Address State
0.0.0.0:0 LISTENING
Proto Local Address
TCP 0.0.0.0:110
Foreign Address State
0.0.0.0:0 LISTENING
If these entries are present, Exchange Server is listening on ports 110 and 25 on all interfaces. This is normal. If these ports are not available, you may need to further troubleshoot the following services or systems. The following general causes may "hold" these ports, or make them unavailable:
The Exchange Server information store service is not running, or the POP3 protocol is not enabled and listening to port 110. Verify that the information store service is running.
The Internet Mail Service is not running or is not listening on port 25. Verify that the Internet Mail Service is running.
A proxy server located between the client and the server may be blocking access to these

Hi User Deleted,
The client connects to a port that is blocked or unavailable on the mail server. If the client is attempting to send a message, the blocked port is 25, if the client is attempting to retrieve a message, the blocked port is 110. Refer to the error message for the protocol and port numbers
Open a command prompt on the Exchange Server computer. You need to modify the command prompt properties, because the data scrolls off the screen.
At the command prompt, type netstat -an. Scroll back to the beginning of the data output, and look for the following entries.
Proto Local Address
TCP 0.0.0.0:25
Foreign Address State
0.0.0.0:0 LISTENING
Proto Local Address
TCP 0.0.0.0:110
Foreign Address State
0.0.0.0:0 LISTENING
If these entries are present, Exchange Server is listening on ports 110 and 25 on all interfaces. This is normal. If these ports are not available, you may need to further troubleshoot the following services or systems. The following general causes may "hold" these ports, or make them unavailable:
The Exchange Server information store service is not running, or the POP3 protocol is not enabled and listening to port 110. Verify that the information store service is running.
The Internet Mail Service is not running or is not listening on port 25. Verify that the Internet Mail Service is running.
A proxy server located between the client and the server may be blocking access to these ports to the Exchange Server computer.
Another application, such as virus-scanning software, has reassigned port 25 to another port. Disable all non-essential services, including antivirus software, and then restart the server
Hope it is usefull for you,

This question was auto closed due to inactivity