Knowledgebase: PHP, ASP & CGI/Perl
ASP.NET Email TLS issue
Posted by Diego Cousinet on 21 February 2011 10:29 AM

If you are using ASP.NET to send emails out using our SMTP server,, then following information will help.

If connecting using TLS, use port 587.

In ASP.Net 2.0, note that the SmtpClient class in System.Net.Mail uses TLS by default when the EnableSsl property is set to true.

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