Sep 06 2006

Send mail with username and password against other email server

Posted by admin under ASP.NET articles

This little snippet is what I use when I send emails from my ASP.NET applications. While the default SMTP server is closed on my box I need to authenticate against the mail server and the code for that is nothing you remember from time to time - so here it is:



public static void SendMail(string sHost, int nPort, string sUserName, string sPassword, string sFromName, string sFromEmail,
		string sToName, string sToEmail, string sHeader, string sMessage )
	{
		if ( sToName.Length == 0 )
			sToName = sToEmail;
		if ( sFromName.Length == 0 )
			sFromName = sFromEmail;

		System.Web.Mail.MailMessage Mail = new System.Web.Mail.MailMessage();
		Mail.Fields["http://schemas.microsoft.com/cdo/configuration/smtpserver"] = sHost;   
		Mail.Fields["http://schemas.microsoft.com/cdo/configuration/sendusing"] = 2;   

		Mail.Fields["http://schemas.microsoft.com/cdo/configuration/smtpserverport"] = nPort.ToString();    

		if( sUserName.Length == 0 )
		{
			//Ingen auth
		}
		else
		{
			Mail.Fields["http://schemas.microsoft.com/cdo/configuration/smtpauthenticate"] = 1;    
			Mail.Fields["http://schemas.microsoft.com/cdo/configuration/sendusername"] = sUserName;     
			Mail.Fields["http://schemas.microsoft.com/cdo/configuration/sendpassword"] = sPassword; 
		}

		Mail.To = sToEmail;   
		Mail.From = sFromEmail;   
		Mail.Subject = sHeader;   
		Mail.Body = sMessage;
		Mail.BodyFormat = System.Web.Mail.MailFormat.Html;

		System.Web.Mail.SmtpMail.SmtpServer = sHost;   
		System.Web.Mail.SmtpMail.Send(Mail);
}

So calling it is like:



SendMail("mail.yourdomain.com", 25, 
"useraccount@yourdomain.com", 
"yourmailpassword", "Your name", "yourmail@yourdomain.com",
"Donald Duck", "donald@domain.com", "Hello there", "How are you?<br>I am fine!");

Actually this is a modified version of my own function, I use web.config for host/port etc so that doesn't have so be sent in every time, but I tried to keep this example to clean as possible. Also some error checking might be good for you to add, if using it for real.