When you send messages using the Microsoft Outlook email client, your computer most likely connects to a server using the Simple Mail Transfer Protocol, or SMTP. Your Internet Service Provider or email company provides access to this server, which relays your messages to their final destinations. If the address of your SMTP server is configured incorrectly, you may be able to receive messages, but not to send them. If you contact technical support regarding this issue, you will need to provide the address of your SMTP server. In Microsoft Outlook, you can obtain this information with a few clicks. Writer Bio
