Smtp mail throuws an error

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1.00/5 (2 votes)

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Hello Experts,

Merry Christmas everyone.
I have a web application, which I need to send an email using smtp.

VB

Protected Sub SendEmail()
        Try
            Dim Client As SmtpClient = New SmtpClient
            Client.EnableSsl = True
            Client.DeliveryMethod = SmtpDeliveryMethod.Network
            Client.UseDefaultCredentials = False
            Client.Host = ""
            Client.Port = "587"

            Dim fromadd As MailAddress = New MailAddress("Su@m.com", "Sushmitha", System.Text.Encoding.UTF8)
            Dim toadd As MailAddress = New MailAddress("Su@m.com", "Sushi", System.Text.Encoding.UTF8)
            Dim msg As MailMessage = New MailMessage(fromadd, toadd)
            msg.Body = "Your information has been submitted successfully! And Here is your Invoice Number: 123. Merry Christmas"
            msg.Subject = " Claim Forms"
            Client.Send(msg)
        Catch ex As Exception

        End Try



    End Sub

And my question is I get an Failure in sending Error. I don't see anything wrong with this code. Ok I wanted to know following things before I start questions
1) what should be Host? is it "m.com". my email is "Su@m.com"
2) Is there any settings I need to do with my IIS?
3) What should I do to check/get the IP address of "m.com"?
4) How to know if there is any Firewall stopping this.

Note: I am testing the application and so I added from and to address same. I have gone through many other websites and also googled it but came empty handed.
Please help me in sorting these things out quickly.

Posted 24-Dec-14 4:33am

sudevsu

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Sergey Alexandrovich Kryukov · Accepted Answer · 2014-12-24T04:45:00

Solution 1

You are totally missing the host name running the SMTP server. It has nothing to do with the host name part of your e-mail address. Think by yourself: what are you addressing to when trying to send a mail? What do you do if you use some available mail client to send your messages? You need to have some SMTP server and know its host name.

—SA

Posted 24-Dec-14 4:45am

Sergey Alexandrovich Kryukov

Comments

Afzaal Ahmad Zeeshan 24-Dec-14 11:05am

+5 for your suitable answer. Yes, she's missing the hostname, not only the hostname infact I believe she is now missing the service she used to register herself. If she knew, she would've got some help from there.

Sergey Alexandrovich Kryukov 24-Dec-14 11:08am

Thank you, Afzaal.
—SA

sudevsu 24-Dec-14 11:38am

Thank you so much

Sergey Alexandrovich Kryukov 24-Dec-14 11:55am

You are very welcome.
Good luck, call again.
—SA

sudevsu 24-Dec-14 12:00pm

Sure I will... Learning one by one so I need you experts ;-) Merry Christmas and Happy New year

Sergey Alexandrovich Kryukov 24-Dec-14 12:51pm

Great. Merry Christmas and my best wishes for New Year!
—SA

Afzaal Ahmad Zeeshan · Accepted Answer · 2014-12-24T04:59:00

Although you're just a newbie to this job I would still try to make the concept clear to you, as much as I can instead of forwarding you to MSDN.

1. The SMTP server host is totally different, you just don't always use the ending characters of your email-address to make up the SMTP server's address. For example, my email addres is "justinXXXXX@gmail.com", now, "gmail.com" is not my SMTP server's domain name. Instead it is, "smtp.gmail.com". It depends on how your client allows you to use their servers to send emails to your clients.

I have tried to Google for m.com, and I've always recieved a negative response also that m.com doesn't exist. Where did you register yourself? I would like to recommend you to use the Gmail (Outlook, Yahoo etc) servers to send and recieve emails until you're learning because of their free email sending budgets for users.

2. No, IIS is already set to allow you to send the emails through a connected server using their configurations. Which are, your username, password and a few other connection settings such as Port etc. Which you won't have to pay any fortune to get started, but in real you would just add them up while building that code of yours.

3. You do not need the IP address of their website or SMTP server domain at all. You will just input the string of domain name, and the DNS server will do the thing for you.

4. It depends on Windows Firewall settings, but usually you won't get any trouble while sending emails through Firewall unless there is any illegal activity.

To get an example of the code to send an email using VB.NET, please read this document it will explain the core concepts and will provide a sample to send the emails.

http://msdn.microsoft.com/en-us/library/system.net.mail.smtpclient(v=vs.110).aspx?cs-save-lang=1&cs-lang=csharp#code-snippet-2[^]

sudevsu · Accepted Answer · 2014-12-24T05:01:00

I solved this... Initially when I had this question what is SMTP host, I have no clue that you alone can look SMTP host from your command prompt. Finally got the solution ... now there is no error in sending email. And Here is the corrected code.

VB

Dim Client As SmtpClient = New SmtpClient
           Client.EnableSsl = False
           Client.DeliveryMethod = SmtpDeliveryMethod.Network
           Client.UseDefaultCredentials = False
           Client.Host = "m.org"
           Client.Port = "25"

           Dim fromadd As MailAddress = New MailAddress("S@m.com", "S", System.Text.Encoding.UTF8)
           Dim toadd As MailAddress = New MailAddress("S@m.com", "S", System.Text.Encoding.UTF8)
           Dim msg As MailMessage = New MailMessage(fromadd, toadd)
           msg.Body = "Your information has been submitted successfully! And Here is your Invoice Number: 123. Merry Christmas"
           msg.Subject = "Claim Forms"
           Client.Send(msg)

But the Email is sitting in Junk Folder. Is there any way that I can make the email sit directly on Inbox.

Smtp mail throuws an error

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