need mail authetication system in C#.net

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Hi all

i need help in sending mail in C#.net.what i need is as the user register, the user should get the userid and random generated password to his/her email id and using that they can login to the system.

Thank you

Posted 21-Aug-12 22:52pm

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Sandip.Nascar · Answer 1 · 2012-08-21T22:58:00

Solution 1

The idea behind this is,

Keep a fields say status (bit datatype) in user table. Default it to 0.
When you send mail to user, encrypt the userid to 128 bit encryption.

like in user email, the link will lokk like this
www.domainname.com/register/activate.aspx?id=OrpAirOxwkUnYoAPKWBQh9lA%2fdTTmcI8kgAAlaBW0Q5erWoFCwvDqvwzkB2g3UYa

You need to create the activate.aspx beforehand. In the code behind of the page, decrypt the id and check with your database.
Once success is returned, update the status field to 1.
and redirect to login page or confirmation page.

In addition, you can send the username and password in the mail body that you have already generated and stored in database.

Thats all
cheers

Posted 21-Aug-12 22:58pm

Sandip.Nascar

Updated 21-Aug-12 23:02pm

v2

Comments

Sandip.Nascar 22-Aug-12 4:59am

one thing to add, while you login, check user credential along with status field.
If status is 0, show message, "Sorry, you are not activated".

[no name] 22-Aug-12 5:04am

sandip the link u gave for activate.aspx is not opening..please check and give me the link again

Sandip.Nascar 22-Aug-12 5:56am

This is an e,g, there is no such domain name like domainname.com
You need to create a page something like this, which will be opened only from email link. In the code behind check the id is available or not and update the status to one.

Remember, this is just for security (for activation) to stop spam

[no name] 22-Aug-12 6:25am

that's what i need some code snippets or some idea how to code that.. theoretically i got what u r telling..so if possible give me some codes for this..

Sandip.Nascar 22-Aug-12 7:05am

check this link
http://www.4guysfromrolla.com/articles/062508-1.aspx

Sunil Kumar Pandab · Answer 2 · 2012-08-21T23:00:00

Try this one :-

C#

try
      {
          MailMessage mail = new MailMessage();
          mail.To = toMail;
          mail.From = "support@xyz.com";
          mail.Subject = "Welcome to xyz!!";
          mail.Body = table;
          mail.BodyFormat = MailFormat.Html;
          mail.Priority = MailPriority.High;
          SmtpMail.SmtpServer = "localhost";
          SmtpMail.Send(mail);
      }
      catch (Exception exe)
      {

      }

ridoy · Answer 3 · 2012-08-21T23:06:00

http://www.techfanas.com/2011/send-email-with-authentication-using-asp-net/[^]
http://www.systemnetmail.com/faq/4.2.aspx[^]
http://stackoverflow.com/questions/298363/how-can-i-make-smtp-authenticated-in-c-sharp[^]
http://msdn.microsoft.com/en-us/library/system.net.mail.smtpclient.aspx[^]
http://www.developerfusion.com/code/5456/sending-authenticated-emails-in-net-20/[^]

Rahul Rajat Singh · Answer 4 · 2012-08-21T23:12:00

Solution 4

How I would do it

1. Have a user registration page.
2. Once user fills in everything generate a random password.
3. send this password to him in a email.
4. have a field in DB saying notVisited = true/1;
5. when the user logs in using this password.
6. when the user logs in check for notVisited.
7. if notVisited is true/1 push him to change password page.
8. set the notVisited = false/0;

Also, i would suggest that instead of sending him the default password send him an activation link instead. that approach is more robust and recommended.

Posted 21-Aug-12 23:12pm

Rahul Rajat Singh

Comments

[no name] 22-Aug-12 5:16am

do u have any aritical, codes, links for sending this activation link ??

Rahul Rajat Singh 22-Aug-12 5:18am

Right now, NO. but i am also assigned a similar task. I will work on it pretty soon. so perhaps I will give you details once I am done with it.

[no name] 22-Aug-12 5:47am

ok..sure..please do tell me as soon as u finish..

need mail authetication system in C#.net

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