My project works well (send e-mail) in local PC, but it can not when uploaded. I have checked SMTP port again and again, port 3535 is open. May the problem caused by config file? I think no. Appreciate all the help, thank you so much and hope to hear from you soon!
Description: The application attempted to perform an operation not allowed by the security policy. To grant this application the required permission please contact your system administrator or change the application's trust level in the configuration file.
Exception Details: System.Security.SecurityException: Request for the permission of type 'System.Net.Mail.SmtpPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.
Source Error:
Line 66: SmtpClient client = new SmtpCl ...
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