Ho to connect to an Exchange server (with ExchangeClient object) using SSL (https)?

Aspose.Email Product Family
1

Hi, I want to connect to an exchange server 2003 via SSL.

I’ve tried this code (using https in the server uri):

Const mailboxUri As String = "https://myExchange2003Server/exchange/myUser"
Const username As String = "myUser"
Const password As String = "myPassword"
Const domain As String = "myDomain"

Sub test()

Try
’ Create instance of ExchangeClient class by giving credentials
Dim credential As NetworkCredential = New NetworkCredential(username, password, domain)
Using client As ExchangeClient = New ExchangeClient(mailboxUri, credential)
'…
End Using
Catch ex As Exception
addMessage(ex.Message)
End Try
End Sub

But I obtain this error:
The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel.

Can be a problem in my exchange server (not well configured) or is there something wrong on my code?
What I need to do to connect to an exchange server via SSL? Using https in the uri is enough or I need to do something else? In your documentarion I’ve found nothing about SSL or server port for the ExchangeClient class.

Thank you!
2

Hi Alessandro,

Thank you for using Aspose.Email.

This error message appears if the Exchange Server has a self signed SSL certificate or it is expired. Please use the following approach to avoid such errors and let us know your feedback:

// register callback method for SSL validation event in main() or init()
ServicePointManager.ServerCertificateValidationCallback += RemoteCertificateValidationHandler;


// this event handler will be called when SSL certificate is verified
private static bool RemoteCertificateValidationHandler(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors)
{
return true; //ignore the checks and go ahead
}
3

OK, now it’s all clear for me!

Many thanks!

Regards
4

Hi Alessandro,


Thank you for the feedback and let us know if we can be of any additional help to you regarding any query/inquiry related to Aspose.Email. We’ll be glad to assist you further.