Category Archives: SSL

Exchange Microsoft SSL

Problems with mail flow after changing email certificate

Problems sending email from onpremises to Office 365 accounts in hybrid environment.


When configuring a hybrid deployment, you must use and configure certificates that you have purchased from a trusted third-party CA.

 To check if the issue is related to the certificate part, please manually remove the previously created hybrid connectors both in the on-premises Exchange server and Office 365, re-run the HCW (Hybrid Configuration Wizard) to re-create these connectors using the new certificate, then check if the messages can be delivered.

Security SSL

SSL Server Test

Security SSL

ASP.NET application serve pages only over HTTPS?

To Serve all the pages over https add this to the Application_BeginRequest method in your Global.asax file.

 Sub Application_BeginRequest(ByVal sender As Object, ByVal e As EventArgs)
   If Request.IsSecureConnection = False Then
     Dim ub As New UriBuilder(Request.Url)
     ub.Scheme = Uri.UriSchemeHttps
     ub.Port = 443
     Response.Redirect(ub.Uri.ToString, True)
   End If
 End Sub