Mail sending using web form FROM my Domain Email account

Question

Dear all I am using my own domain email account like rbme@rbme.com.pk to send email from the asp.net web application  sometimes it send an email and some times it did not send an email randomly  i debug the code and it says cannot connect to the server IP{some IP:Port} so i contact the service provider and they said that the firewall on the server is blocking the IP due to shared hosting  so they suggest me to tell them all the IP address from where the request come to send an email  but the nature of my application is like that i do not know all the client earlier so that i can share the IP with hosting provider to white list them secondly they may have dynamic IP so i cannot share the IP What would be the work around  I am using the NEXUS solution provider.

Mark Tabor · Answer

web application .

Nitin Sontakke · Answer

Is this a Windows Forms Application?

Mark Tabor · Answer

Nitin Sontakke that is static not dynamic  My code is fine it works with gmail smtp but with the hosting mail server  they said the server is blocking the address of machine IP not that server IP it blocks the machine IP from user machine which is going to send email using the hosting mail server but the IP of that machine is blocked by the server as it is shared

Nitin Sontakke · Answer

You see the following line in your code? smtp.Host = IP They want the IP that you are typing here. Are you sure that it is dynamic?

Mark Tabor · Answer

dear Nitin Sontakke  Praveen Kumar Sreeram pastingthanks for response my application is sending email by the mail server of my hosting provider so my Ip is static not dynamic they said that you have shared hosting so my one user is in one city and other is in another city so they have different net works  so the Firewall on the hosting server blocks the machine IP.s

Mark Tabor · Answer

dear Praveen Kumar Sreeram i am sending email fine below is my method . Private Sub btnSubmit_Click(ByVal sender As Object ByVal e As System.EventArgs) Handles btnSubmit.Click Try Dim Msg As New MailMessage Msg.Subject = Contact Us Form ' Sender e-mail address. Msg.From = New MailAddress(txtEmail.Text) ' Recipient e-mail address. Msg.To.Add(omer@planrbme.com.pk) Msg.Subject = txtSubject.Text Msg.Body = txtMessage.Text ' your remote SMTP server IP. Dim smtp As New SmtpClient() smtp.Host = IP smtp.Port = PortNumber smtp.Credentials = New System.Net.NetworkCredential(rbme@planrbme.com.pk passwrd) smtp.EnableSsl = False smtp.Send(Msg) 'Msg = null; lbltxt.Text = Thanks for Contact us ' Clear the textbox valuess txtName.Text =  txtSubject.Text =  txtMessage.Text =  txtEmail.Text =  DisplayMessage(Me.Master.MessageBox Email Sent Your Email Message has been sent please wait for response! MessageBoxTypes.Success) Catch ex As Exception Console.WriteLine({0} Exception caught. ex) End Try End Sub The issue is that my hosting provider says that my machine IP is blocked by them  so they said that you are using shared hosting so you are not allowed to send email via form  the outlook works fine ? so what is the solution

Bikesh Srivastava · Answer

Hi Mark You should use exchange server logic to resolve your problem because you want change your server according your requirment.

Nitin Sontakke · Answer

They are not asking for IP of the receivers just senders. Could you please explain how you are having several sender IPs? It is not clear to me. So that I (and others) get an idea.

Praveen Kumar Sreeram · Answer

Hi Mark You need to provide the IP Address of the Web Server where your Web applicaiton is being hosted. You don't need to know the IPAddress of the end users (clients). You just provide the IPaddress of your WebServer and i don't think it will be dynamic and gets changed. Don't worry. It just a simple thing. Thanks Prawin

Mail sending using web form , FROM my Domain Email account