And??

You're not really communicating here. You're posting code and not providing much useful information. On that basis, I can't really help.

Imar


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Imar Spaanjaars
http://Imar.Spaanjaars.Com
Everyone is unique, except for me.
Author of ASP.NET 2.0 Instant Results and Beginning Dreamweaver MX / MX 2004

hello sir i am raghuvar

actually i am createing a form to send mail in ASP.net but i am getting an error

"The server rejected one or more recipient addresses. The server response was: 451 Greylisted, please try again in 300 seconds "

so what is the solution of this please tell me early.

The code which are using tosend mail is given below.



MailMessage M = new MailMessage();
        M.To = "[email protected]";
        M.From = "[email protected]";
        M.Subject = "how are you raghuvar";
        M.Body = "raghuvar you are working where";
        M.BodyFormat = MailFormat.Html;
        try
        {
            SmtpMail.SmtpServer = "mail.softindigo.com";//mail.softindigo.com is the smtpservername
            SmtpMail.Send(M);
            Response.Write("mail send sucessfully");
        }
        catch (Exception ex)
        {
            Response.Write(ex.Message);
        }
        }

Error in forum posts, OP is stuck in a loop....

If you want, we can play this game for ever. You post code and an error message, and I ask you if you've read the error message and understand what it is saying.

Did you? What does it tell you? Did you try to Google for it? Can you provide more information? Can you tell us if the e-mail accounts you are using are valid and available? Can you tell us if you are allowed to use the SMTP server you are using? Can you tell us if you can send e-mail to these account with other means (e.g. a normal mail client) Can you tell us if you are indeed black or grey listed because you or your provider have sent spam in the past? Bla bla bla bla and so on and so forth.

Bottom line: simply dumping code and error messages isn't going to get you far on this forum. Please post a *relevant* question, that shows you have done some research yourself in order to understand the problem. Take a look here for some great ideas: http://www.catb.org/~esr/faqs/smart-questions.html

Without all that, I can't help you.

Imar

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Imar Spaanjaars
http://Imar.Spaanjaars.Com
Everyone is unique, except for me.
Author of ASP.NET 2.0 Instant Results and Beginning Dreamweaver MX / MX 2004

In my experience, a mail server will reject a mail send request when one of these conditions is met:

1) You are connecting to the mail server that is responsible for the domain of the address you are sending to and the address/account does not exist. A mail server can verify the existence of an address ONLY for those domains it is responsible for.

2) The mail server does not permit mail relay. This is typical to happen when you try to use the SMTP server address of the mail server that you normally use to GET your mail. Often the mail server authenticates your POP3 session and will thereafter accept an SMTP send request from the same client. In the case of sending mail with .NET there is no incoming POP3 connection to authenticate the client (I.E. the machine your program is running on). You will need to find out if your SMTP server supports authenticated SMTP connections.

There are very likely other cases where a server can reject a send request, but these are the two most likely and most common ones.

-Peter