Article ID: 296161 - View products that this article applies to.
This article was previously published under Q296161
When you attempt to send a message through a Mindspring Simple Mail Transfer Protocol (SMTP) server, you may receive the following error message:
The message could not be sent because it rejected you as the sender. Server response '550', Access Denied 0x800CCC78
This behavior can occur because the Mindspring SMTP server is not available for outgoing messages. Mindspring no longer allows use of their SMTP server to send messages unless you are connected through a dial-up.
To resolve this behavior, point outgoing messages to a different SMTP server:
The third-party products that are discussed in this article are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.
For information about how to contact Earthlink, Inc., click the appropriate article number in the following list to view the article in the Microsoft Knowledge Base:
(https://support.microsoft.com/kb/65416/EN-US/ )Hardware and Software Third-Party Vendor Contact List, A-K
(https://support.microsoft.com/kb/60781/EN-US/ )Hardware and Software Third-Party Vendor Contact List, L-P
(https://support.microsoft.com/kb/60782/EN-US/ )Hardware and Software Third-Party Vendor Contact List, Q-Z
Article ID: 296161 - Last Review: May 10, 2001 - Revision: 1.0
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.