Cannot send mails to outside email addresses..

Question

User1357926729 posted

I need to send Email from my webpage when the manager approves a request.the send address and to address is taken from the database.My issue is that i can sent the mail only to the company emil adresses  ie,the emil id's which ends in @log-ram.com.I cant send it to outside email id's like gmail and yahoo.relay denied error is coming.Can anyone tell me the olution.Is it the problem with my system SMTP server.How can i correct it. Below is my function to send the mail.

Public Shared Sub sendmail(ByVal strto As String, ByVal strfrom As String, ByVal strsub As String, ByVal strbody As String)

Dim objfrom As New MailAddress(strfrom)

Dim objto As New MailAddress(strto)

Dim objmail As New MailMessage(objfrom, objto)

objmail.Body = strbody

objmail.Subject = strsub

objmail.DeliveryNotificationOptions =DeliveryNotificationOptions.OnFailure
objmail.IsBodyHtml =True

Dim objsmtp As New SmtpClient()

objsmtp.Credentials =New System.Net.NetworkCredential("[e-mail]", "&dmiN1")

objsmtp.Port = 25

 objsmtp.Host ="smtp20a.serverdata.net"

objsmtp.Send(objmail)

End Sub

Answer 1

User-1509636757 posted

Probably your smtp server is not allowing to relay mail to outside domains. Have you tried to manually send to outside domain like yahoo, gmail?

Answer 2

User1243880387 posted

Make sure the host specified in the smtp host is valid for mails outside domain.

I faced the same issue when my host was limited in access.

Answer 3

User1357926729 posted

Probably your smtp server is not allowing to relay mail to outside domains.

Can u tell me how to check whether my smtp server is allowing to relay mail to outside domains or not..and if not allowing,how to allow it?

I can send mails to outside domain manually.

Answer 4

User1357926729 posted

Make sure the host specified in the smtp host is valid for mails outside domain.

Can u please tell me how can i check whether the host specified in the smtp host is valid for mails outside the domain.

Answer 5

User1357926729 posted

I am using windows 7 and when i checked my IIS manager,i cant find SMTP virtual server in it..how can i install and configure it?Some one help me please..

Answer 6

User1243880387 posted

objsmtp.Host ="smtp20a.serverdata.net"

From where you had written this?

Answer 7

User1357926729 posted

"smtp20a.serverdata.net"   this was the network host name in our company's existing website config file.In the website,Email need to be send only to the company mail ID's.Is the host name which is the reason for access denied error.

 

Answer 8

User1357926729 posted

Some one please help me..i need to solve this issue so urgently..

Answer 9

User-1509636757 posted

Whatever it is, it is not a problem of your C# code, but a problem of your mail server.

but here are a couple of things I have seen:
* The SMTP server that tries to relay your email checks your IP address against your From address. If these won't match, it won't relay.
* It is usually the best to use the SMTP of your Internet Service Provider for sending emails.

Reference Link: 'Transaction failed. The server response was: 5.7.1 Relay access denied in asp.net'

hope it helps./.

Answer 10

User-1509636757 posted

Is it possible for you to try some other SMTP to send mail and all? If there is one of alternative to you; then you can check below links as well:

• Sending mail with Gmail Account using System.Net.Mail in ASP.NET - DotNetJalps 
• Send Mail using Gmail - How to send email using ASP.NET : The Official Microsoft ASP.NET Forums 

hope it helps./.