unable to relay with vb.net system.mail

[Chris Thunell]

I am using the following code to send email out in a vb.net web program
through an exchange 2003 server. My web server is on a separate server.
When i try to send email inside the office, it works fine... but when i try
to send email outside the company i get "unable to relay" error message.
Please look at the code, i don't see a way to send username and password
credentials to allow the relaying to occur (I don't want unauthenticated
relaying to be allowed, because that would open our system up for outsiders
to relay as well). Both the web server and exchange are within our
organzation. Any thoughts?
Thanks in advance!
Chris Thunell
ct******@pierceassociates.com
Imports System.Web

Imports System.Web.Mail
Dim message As New MailMessage

Dim Attachment As System.Web.Mail.MailAttachment

With message

..BodyFormat = MailFormat.Html

..To = "ct******@pierceassociates.com" 'RecipientList

..Cc = MessageFrom

..Subject = MessageSubject

..From = MessageFrom

..Body = MessageBody

If Len(Trim(AttachmentLocation)) > 1 Then

Attachment = New MailAttachment(Trim(AttachmentLocation))

..Attachments.Add(Attachment)

End If

End With

SmtpMail.SmtpServer = "myemailserver.domain.com"

SmtpMail.Send(message)

[John Timney \(ASP.NET MVP\)]

There doesn't look to be anything wrong with your code, so your mail admin
should be able to set a rule in your mail server to allow relays from the
web servers IP address without compromising the ability to stop relays from
outside the company

--
Regards

John Timney
ASP.NET MVP
Microsoft Regional Director

"Chris Thunell" <ct******@pierceassociates.com> wrote in message
news:%2****************@TK2MSFTNGP11.phx.gbl...

I am using the following code to send email out in a vb.net web program
through an exchange 2003 server. My web server is on a separate server.
When i try to send email inside the office, it works fine... but when i try to send email outside the company i get "unable to relay" error message.
Please look at the code, i don't see a way to send username and password
credentials to allow the relaying to occur (I don't want unauthenticated
relaying to be allowed, because that would open our system up for outsiders to relay as well). Both the web server and exchange are within our
organzation. Any thoughts?
Thanks in advance!
Chris Thunell
ct******@pierceassociates.com
Imports System.Web

Imports System.Web.Mail
Dim message As New MailMessage

Dim Attachment As System.Web.Mail.MailAttachment

With message

.BodyFormat = MailFormat.Html

.To = "ct******@pierceassociates.com" 'RecipientList

.Cc = MessageFrom

.Subject = MessageSubject

.From = MessageFrom

.Body = MessageBody

If Len(Trim(AttachmentLocation)) > 1 Then

Attachment = New MailAttachment(Trim(AttachmentLocation))

.Attachments.Add(Attachment)

End If

End With

SmtpMail.SmtpServer = "myemailserver.domain.com"

SmtpMail.Send(message)

[Chris Thunell]

Do you have a Microsoft article that tells me how to do that?
Chris Thunell
ct******@pierceassociates.com

"John Timney (ASP.NET MVP)" <ti*****@despammed.com> wrote in message
news:uv**************@TK2MSFTNGP10.phx.gbl...

There doesn't look to be anything wrong with your code, so your mail admin
should be able to set a rule in your mail server to allow relays from the
web servers IP address without compromising the ability to stop relays from outside the company

--
Regards

John Timney
ASP.NET MVP
Microsoft Regional Director

"Chris Thunell" <ct******@pierceassociates.com> wrote in message
news:%2****************@TK2MSFTNGP11.phx.gbl...

I am using the following code to send email out in a vb.net web program
through an exchange 2003 server. My web server is on a separate server.
When i try to send email inside the office, it works fine... but when i

try

to send email outside the company i get "unable to relay" error message.
Please look at the code, i don't see a way to send username and password
credentials to allow the relaying to occur (I don't want unauthenticated
relaying to be allowed, because that would open our system up for

outsiders

to relay as well). Both the web server and exchange are within our
organzation. Any thoughts?
Thanks in advance!
Chris Thunell
ct******@pierceassociates.com
Imports System.Web

Imports System.Web.Mail
Dim message As New MailMessage

Dim Attachment As System.Web.Mail.MailAttachment

With message

.BodyFormat = MailFormat.Html

.To = "ct******@pierceassociates.com" 'RecipientList

.Cc = MessageFrom

.Subject = MessageSubject

.From = MessageFrom

.Body = MessageBody

If Len(Trim(AttachmentLocation)) > 1 Then

Attachment = New MailAttachment(Trim(AttachmentLocation))

.Attachments.Add(Attachment)

End If

End With

SmtpMail.SmtpServer = "myemailserver.domain.com"

SmtpMail.Send(message)

[Jeffrey Palermo [MCP]]

Chris,
I've run into this exact issue, and it is indeed the mail server's
settings. If your mail server is IIS, check out any of the articles
returned by this simple google search:
http://www.google.com/search?sourcei...urity+mail+IIS

Regardless, this is a mail server issue, not ASP.NET.

--
Best regards,
Jeffrey Palermo
Blog: http://dotnetjunkies.com/weblog/jpalermo
"Chris Thunell" <ct******@pierceassociates.com> wrote in message
news:OF**************@tk2msftngp13.phx.gbl...

Do you have a Microsoft article that tells me how to do that?
Chris Thunell
ct******@pierceassociates.com

"John Timney (ASP.NET MVP)" <ti*****@despammed.com> wrote in message
news:uv**************@TK2MSFTNGP10.phx.gbl...

There doesn't look to be anything wrong with your code, so your mail admin should be able to set a rule in your mail server to allow relays from the web servers IP address without compromising the ability to stop relays

from

outside the company

--
Regards

John Timney
ASP.NET MVP
Microsoft Regional Director

"Chris Thunell" <ct******@pierceassociates.com> wrote in message
news:%2****************@TK2MSFTNGP11.phx.gbl...

I am using the following code to send email out in a vb.net web program through an exchange 2003 server. My web server is on a separate server. When i try to send email inside the office, it works fine... but when i

try

to send email outside the company i get "unable to relay" error

message. Please look at the code, i don't see a way to send username and password credentials to allow the relaying to occur (I don't want unauthenticated relaying to be allowed, because that would open our system up for

outsiders

to relay as well). Both the web server and exchange are within our
organzation. Any thoughts?
Thanks in advance!
Chris Thunell
ct******@pierceassociates.com
Imports System.Web

Imports System.Web.Mail
Dim message As New MailMessage

Dim Attachment As System.Web.Mail.MailAttachment

With message

.BodyFormat = MailFormat.Html

.To = "ct******@pierceassociates.com" 'RecipientList

.Cc = MessageFrom

.Subject = MessageSubject

.From = MessageFrom

.Body = MessageBody

If Len(Trim(AttachmentLocation)) > 1 Then

Attachment = New MailAttachment(Trim(AttachmentLocation))

.Attachments.Add(Attachment)

End If

End With

SmtpMail.SmtpServer = "myemailserver.domain.com"

SmtpMail.Send(message)