MX Lookup Mail Server Domain by Email Address

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How to find the mail server for a given email address. Returns the domain name of the primary mail server.

Chilkat.MailMan mailman = new Chilkat.MailMan();

//  Any string argument automatically begins the 30-day trial.
bool success;
success = mailman.UnlockComponent("30-day trial");
if (success != true) {
    MessageBox.Show("Component unlock failed");
    return;
}

//  Should return "mail.chilkatsoft.com"
string mailServerHostname;
mailServerHostname = mailman.MxLookup("support@chilkatsoft.com");

MessageBox.Show(mailServerHostname);