Article ID: 154578 - View products that this article applies to.
This article was previously published under Q154578
This article describes troubleshooting steps you can use to help you diagnose problems that may occur when you connect to your Simple Mail Transport Protocol (SMTP) or POP3 mail server with Internet Mail. For example, this article may be useful if you receive the following error message:
The connection to the server has failed.
SMTP and POP3 Server SettingsMicrosoft supports configuring Internet Mail to connect to one SMTP and one POP3 mail server. The default port addresses for SMTP and POP3 connections in Internet Mail are 25 and 110, respectively.
If you experience problems connecting to your mail servers, make sure that your SMTP and POP3 server port settings are correct. You can check your current port address settings or configure Internet Mail to use different port addresses using the following steps:
TCP/IP SettingsUse ALL of the following troubleshooting methods to ensure that your configuration settings are correct and that your dial-up connection is functioning properly.
Test the integrity of your local Transmission Control Protocol/Internet Protocol (TCP/IP) stack integrity, by pinging the appropriate (loopback) Internet Protocol (IP) address. To do this, follow these steps:
Test your TCP/IP settings by pinging a known good Internet site. To do this, follow these steps.
Note Many entities on the Internet now use firewalls to block ICMP Echo Request messages.
Verify that mailer daemons are responding on their specified ports by using Telnet commands. To do this, use the following steps:
Article ID: 154578 - Last Review: February 10, 2006 - Revision: 2.1
Retired KB Content Disclaimer
This article was written about products for which Microsoft no longer offers support. Therefore, this article is offered "as is" and will no longer be updated.
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