Sending email using .NET System.Web.Mail

Customer Support Email Support
1

Hi all. I need to customize my email sending, so I can’t use the standard lists. I track the emails I need to send to in a database and use System.Web.Mail.MailMessage class from an aspx page on my site to send them.

It works fine just using the local Smtp server, except I get blocked by all the big people (hotmail, gmail, yahoo, etc). Is there a way I can use my actual relay server to send the mails, instead of just the local smtp server on the web server?

I tried setting the SmtServer for SmtpMail to my relay (see C# code below), but then all mails fail since I don’t have access to send from the relay server. Is there a way to make this work?

Thanks,
Keith

Code:

MailMessage msg = new MailMessage();
msg.From = fromEmail
msg.Subject = subject;
msg.To = toEmail;
msg.Body = body;
msg.BodyFormat = MailFormat.Html;

SmtpMail.SmtpServer = “mail2.jodoshared.com”;
SmtpMail.Send(msg);

2

Ugh… I just needed to post to finally figure it out I guess…

For those reading this with the same problem, you use the realy server (or your own mail.MyDomain.com) and then you authenticate against the Smtp server using MailMessage fields:

So add this stuff in my code above:

msg.Fields[“http://schemas.microsoft.com/cdo/configuration/smtpserver”] = relayServer;
msg.Fields[“http://schemas.microsoft.com/cdo/configuration/smtpserverport”] = 25;
msg.Fields[“http://schemas.microsoft.com/cdo/configuration/sendusing”] = 2;
msg.Fields[“http://schemas.microsoft.com/cdo/configuration/smtpauthenticate”] = 1;
msg.Fields[“http://schemas.microsoft.com/cdo/configuration/sendusername”] = sendEmail; msg.Fields[“http://schemas.microsoft.com/cdo/configuration/sendpassword”] = password;

SmtpMail.SmtpServer = relayServer;

Here’s where I found it:
http://www.eggheadcafe.com/PrintSearchContent.asp?LINKID=622

3

Thanks for that. I didn’t realise that could be done with .NET 1.1 although now that I know what to look for, I see that its even in the .NET docs as an example for the MailMessage.Fields property.

FYI, .NET 2.0 has a new namespace, System.Net.Mail, for sending email with lots of functionality, including the authentication.

Cheers
Ross

4

Yeah, forgot to mention this was 1.1, thanks for pointing that out. I’ll be going to 2.0 soon hopefully…