Go to WebHelps.com
Web Site Add-Ons Web Site Development Specialty Packages Web Hosting Plans Domain Name Services
Postmaster Services
 Disabling Eudora's SMTP Check
Eudora users may find they have trouble sending to email addresses using virtual domains hosted on the WebHelps IMail® Server. This is a result of Eudora's SMTP Relay Check, which is performed automatically and invisibly, prior to sending. Disabling this Check will resolve the problem.
Instructions. In Eudora, go to the Tools menu. Under Options, click Sending Mail. The window above will appear. Uncheck the [Send on Check] box.