"Bill" <btcchan@hotmail.com> wrote in message
news:eBJpHl%23$FHA.3568@TK2MSFTNGP09.phx.gbl...
> Hi everybody,
>
> I had an ASP application using CDONTS to send e-mail, which ran on W2KSP4
> box and IIS5 with virtual SMTP server. The SMTP server was connected to a
> smart host of MDaemon mail server having a public IP address. It has been
> running fine. Since then I set up the ASP application back home using a
> ADSL connection through a D-Link router. The SMTP server could not send
> e-mail out, and the Event Viewer showed the error message of "An internal
> DNS server error caused a failure to find the remote server". I have
> opened up the TCP/53 and UDP/53 port at the firewall. I have tried the
> followings,
>
> 1) I have tried the Nslookup utility to look up the domain name of
> www.microsoft.com per KB263237, but setting vc and q=mx. The response
> message is that my ISP's DNS server can't find www.microosft.com.
> 2) I tried to work around by setting the smart host to point to my ISP's
> smtp server. My ISP's smtp server needs an authentication, and I put the
> outbound security to use "Basic authentication" with my user name and
> password. Still no luck.
> 3) I have set up the smtp server of my Outlook to point to that virtual
SMTP
> server of W2KSP4 box to relay messages. The Event Viewer did not show the
> error message as indicated above, but I could not receive those relayed
> messages. I checked the log files of the SMTPSVC1 and found that the
> relayed messages have been relayed out to my ISP mail server.
>
> Could someone point me to the right direction to solve this problem?
>
> Cheers.
>
> Bill
>
>