SMTP Error: Failure Sending Email

Question

I've downloaded a sample application sending email silverlight application here

via gmail. But I cant make it work. Its error is "Failure sending mail."

{"Failure sending mail."} [System.Net.Mail.SmtpException]: {"Failure sending mail."} Data: {System.Collections.ListDictionaryInternal} HelpLink: null InnerException: {"Unable to connect to the remote server"} Message: "Failure sending mail." Source: "System" StackTrace: " at System.Net.Mail.SmtpClient.Send(MailMessage message)\r\n at SLSentEmail.Web.Services.EmailService.SendEmail(SLEmailMessage emailMessage) in C:\Downloads\Temp\SLSentEmail\SLSentEmail\SLSentEmail.Web\Services\EmailService.svc.cs:line 27" TargetSite: {Void Send(System.Net.Mail.MailMessage)}

thank you in advance

Answer 1

Without knowing your setup or code, I would look into the inner exception - "Unable to connect to the remote server".

Do you actually have access to the SMTP server?

Could there be a block due to a system or network firewall? Some ISPs block port 25 in order to stop bot spamming, you may need to connect via a different port.