Hi there.

I have a webserver (windows2000 running cdosys) that generates a lot of
emails to a particular domain.  This domain is of a customer that is
directly connected and wishes me to configure the server with a hosts
entry to point to the inside address of their mail server.

I have done this,  but tcpdumps on the firewall indicate that the
system is still attempting to resolve DNS for this domain via our DNS
server and then send the mail out via the public address.  I can ping
the name of the mail server and it seems to use the hosts entry fine,
but the auto generated messages via iis do not do this.

Please help me understand IIS/CDOSys DNS better so that I might
understand why it is behaving this way.

TIA!

Googleboy

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On 11 Aug 2005 21:06:15 -0700, "googleboy" <mynews44@yahoo.com> wrote:

>I have a webserver (windows2000 running cdosys) that generates a lot of
>emails to a particular domain.  This domain is of a customer that is
>directly connected and wishes me to configure the server with a hosts
>entry to point to the inside address of their mail server.
>
>I have done this,  but tcpdumps on the firewall indicate that the
>system is still attempting to resolve DNS for this domain via our DNS
>server and then send the mail out via the public address.  I can ping
>the name of the mail server and it seems to use the hosts entry fine,
>but the auto generated messages via iis do not do this.
>
>Please help me understand IIS/CDOSys DNS better so that I might
>understand why it is behaving this way.

IIS/SMTP will use the network DNSsettings, and I thought the hosts
first, but if you're having trouble why not add the customer's zone in
your DNS instead of hosts?

Jeff

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To route mail to a particular host for a particular domian you can try using
smart host configuration instead of DNS. Configure the smathost pointing to
internal IP address of the destination domain's SMTP server.  This has to be
done on your SMTP server

http://www.microsoft.com/technet/pr...0b39c2b2b6.mspx  (Configuring Smart Hosts (IIS 6.0))

Hope this helps..
Regards
Roopesh

"googleboy" wrote:

> Hi there.
>
> I have a webserver (windows2000 running cdosys) that generates a lot of
> emails to a particular domain.  This domain is of a customer that is
> directly connected and wishes me to configure the server with a hosts
> entry to point to the inside address of their mail server.
>
> I have done this,  but tcpdumps on the firewall indicate that the
> system is still attempting to resolve DNS for this domain via our DNS
> server and then send the mail out via the public address.  I can ping
> the name of the mail server and it seems to use the hosts entry fine,
> but the auto generated messages via iis do not do this.
>
> Please help me understand IIS/CDOSys DNS better so that I might
> understand why it is behaving this way.
>
> TIA!
>
> Googleboy
>
>

[ Post a follow-up to this message ]