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Hello,<br />
I'm trying to send E-mail using System.Net.Mail in a Windows Forms application in C#.<br />
I'm getting the following error..<br />
<br />
&quot;The remote certificate is invalid according to the validation procedure.&quot;<br />
<br />
Please help me with this..<br />
Thanks,.
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Hello,
I'm trying to send E-mail using System.Net.Mail in a Windows Forms application in C#.
I'm getting the following error..

"The remote certificate is invalid according to the validation procedure."

Please help me with this..
Thanks,.

The remote certificate is invalid according to the validation procedure.

Interactions between email servers and clients are governed by email protocols. The three most common email protocols are POP, IMAP and MAPI. Most email software operates under one of these (and many products support more than one).  The correct protocol must be selected, and correctly configured, if you want your email account to work.

Email Protocols

IIS is Internet Information Services, the web server included with Windows Server operating systems. All current versions are built on a modular architecture; modules can be added or removed individually so that those required for specific functionality are installed. The full installation of IIS includes HTTP, security, content, compression, caching, logging and diagnostics.

Microsoft IIS Web Server

HTTPS is a protocol for secure communication over a computer network which is widely used on the Internet. HTTPS consists of communication over Hypertext Transfer Protocol (HTTP) within a connection encrypted by Transport Layer Security (TLS) or its predecessor, Secure Sockets Layer (SSL). The main motivation for HTTPS is authentication of the visited website and to protect the privacy and integrity of the exchanged data. HTTPS is widely used for protecting page authenticity on all types of websites, securing accounts and keeping user communications, identity and web browsing private.