C ASP NET Send Email via TLS

Question

In order to comply with HIPAA regulations  we need to send email from an external site  outside the firewall  to an internal Exchange server  inside the firewall   Our Exchange admins tell us we need to use TLS encryption to send mail from the web server to the email server   I ve never used TLS before and I m not very familiar with it  Searching on Google as brought up numerous paid-for-use libraries  Is there anything native to  NET that will accomplish this  If so  how do I configure it  If not  is there something free or open source   Current Configuration    ASP NET C  Web Application 2 0 Framework Using System Net Mail to send email and attachments via SMTP IIS 6 0

User · Answer

On SmtpClient there is an EnableSsl property that you would set   i e    SmtpClient client   new SmtpClient exchangeServer   client EnableSsl   true  client Send msg

User · Answer

TLS  Transport Level Security  is the slightly broader term that has replaced SSL  Secure Sockets Layer  in securing HTTP communications  So what you are being asked to do is enable SSL

User · Answer

I was almost using the same technology as you did  however I was using my app to connect an Exchange Server via Office 365 platform on WinForms  I too had the same issue as you did  but was able to accomplish by using code which has slight modification of what others have given above   SmtpClient client   new SmtpClient exchangeServer  587   client Credentials   new System Net NetworkCredential username  password   client EnableSsl   true  client Send msg     I had to use the Port 587  which is of course the default port over TSL and the did the authentication

[asp.net] C# ASP.NET Send Email via TLS

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