"Bill" <n*@no.com> wrote in message
news:u0OAMGOFIHA.4956@TK2MSFTNGP06.phx.gbl...
>I know absolutely nothing about Exchange so I need the answer for
> dummies.:) I have a vertical market application that sends emails under
> certain circumstances. The emails are sent using SMTP, specifically the
> Indy SMTP component, and this works fine at numerous sites. However, it
> does not work at all at a site that uses and Exchange server for email.
> The outbound message simple vanishes. There is no error message. No
> email is returned saying that the message cannot be sent.
>
> Can someone point me to some documentation on how to send an SMTP mail
> message using an Exchange server?
>
> If I am posting in the wrong newsgroup please let me know where I
> should post. Thanks.
>
> --
> .Bill.

"Bill" <n*@no.com> wrote in message
news:OhCs8uPFIHA.6120@TK2MSFTNGP05.phx.gbl...
> Bharat Suneja [MVP] wrote:
>
>> You can either have the sending application authenticate, or if
>> that's not possible and the messages are being relayed to external
>> recipients, setup another SMTP virtual server (preferable, requires
>> another IP address to be added to the server if you don't want to use
>> an alternate port) and allow the sending host to relay. Good idea to
>> restrict connectivity on such SMTP VSes to only the hosts that are
>> allowed to send/relay.
>
> Thanks for your reply but I cannot understand most of it since I know
> nothing about Exchange. When you say "can either have the sending
> application authenticate" what do you mean. Normally, when I send SMTP
> messages using an ISP's email system I provide the sender's email
> address and password. Is that what you are referring to? In this case I
> was told, indirectly, that all I need to provide is the sender's email
> address but that is not working? By "authenticate" do you mean supply
> both the sender's email address and password?
>
> --
> .Bill.