![]() ĭKIM provides the ability to sign a message, and allows the signer ( author organization) to communicate which email it considers legitimate. System administrators also have to deal with complaints about malicious email that appears to have originated from their systems, but did not. For example, a fraudster may send a message claiming to be from with the goal of convincing the recipient to accept and to read the email-and it is difficult for recipients to establish whether to trust this message. ![]() The need for email validated identification arises because forged addresses and content are otherwise easily created-and widely used in spam, phishing and other email-based fraud. It is defined in RFC 6376, dated September 2011, with updates in RFC 8301 and RFC 8463. Usually, DKIM signatures are not visible to end-users, and are affixed or verified by the infrastructure rather than the message's authors and recipients.ĭKIM is an Internet Standard. A valid signature also guarantees that some parts of the email (possibly including attachments) have not been modified since the signature was affixed. The recipient system can verify this by looking up the sender's public key published in the DNS. It achieves this by affixing a digital signature, linked to a domain name, to each outgoing email message. MailMessage.To.Add(new MailAddress(userName)) ĮnableSsl = useSsl.ToLower().DomainKeys Identified Mail ( DKIM) is an email authentication method designed to detect forged sender addresses in email ( email spoofing), a technique often used in phishing and email spam.ĭKIM allows the receiver to check that an email that claimed to have come from a specific domain was indeed authorized by the owner of that domain. MailMessage.From = new MailAddress(from) Add the alternate views instead of using MailMessage.Body LinkedResource footer = new LinkedResource("Footer.jpg", ) LinkedResource header = new LinkedResource("Header.jpg", ) Create a LinkedResource object for each embedded image ![]() String htmlBody = string.Format("", emailBody) ĪlternateView avHtml = AlternateView.CreateAlternateViewFromString(htmlBody, Encoding.Default, ) ![]() I assumed that from and userName are strings, creating instances of MailAddress: public static void SendMail(string from, string userName, string subject, string emailBody) ![]() You can embed resources in a MailMessage using AlternateView. ![]()
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