Email not working with an SMTP server that has SSL?Ask Questions

 Posted on 10/12/2019

Hi I'm new to the dotnetCore webapi. I just started development. Everything seems to be working fine except email. There is no web.config file in project and for email in web.config is needed or not?

The exception I get from any function that sends email is "The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7.0 Must issue a STARTTLS command first"

My ISP told me that its smtp server uses encryption with SSL (and still port 25). Could that be the problem? If so how can I get this to work with SSL ?

Thank you very much for any help...

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Asked by Grayson Omans on 10/12/2019 Score: 60 points
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Answered by Helder Sepulveda on 10/12/2019 7:41:48 AM Score: 58 points

Grayson Omans, Please cross verify EnableSSL = true  is the SSL flag you are talking about looks like the following?

System.Net.Mail.SmtpClient mailClient = new System.Net.Mail.SmtpClient();

mailClient.EnableSsl = true;



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