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Smtp mail problem at Winhost (solved)

Tuesday, June 28th, 2011

When I tried to send email from my main site hosted at, I got this permission error: “Request for the permission of type ‘System.Net.Mail.SmtpPermission, System, Version=, Culture=neutral, PublicKeyToken=b77a5c561934e089′ failed..”. Winhost support forum has responded to this problem and suggested adding “<trust level=”Full”> under the <system.web> in web.config. I did that and the problem went away.

Thanks to folks at winhost support forum, I was also able to call Winhost smtp client, using Network credentials given to my hosting account, directly from my development local machine and sent email out by port 587. This sample code at Winhost KB was the right place to get start with Winhost smtp mail: