Exchange IP address question   

I have a Exchange 2000 server. It was setup with our old internet service and 
Cisco Router. Last week, we got a new internet service, and a new Cisco 
Router.

I had a Cisco guy program the router, then we changed our DNS to update the 
records. Everything seemed to work fine. Incoming mail is working fine. 
Outgoing mail is a little bit weird. Here is whats happening:

(These IP addresses are used hypothetically)

We are using the IP address on the outside of 155.225.38.4 and the dns is 
setup for mail.myserver.com. I can verify it is setup correctly by doing a 
NSLOOKUP anywhere.

But, when I SEND mail, it is delivered with the IP address of 155.225.38.3, 
which is the IP address of my router. 

Is this a misconfiguration on our router? I don't see anything in Exchange 
that points to the external IP address.

At this point, I am sending mails, but some may be confused as spam, if they 
are doing a reverse lookup. Please help!

Jeff

date: Thu, 15 Dec 2005 06:10:07 -0800   author:   Jeff

Re: Exchange IP address question   

Hi,

Could be that SMTP filtering on the cisco router is enabled?

Leif

"Jeff"  wrote in message 
news:BC55AD3E-F4DB-48E0-8C7E-CE81B926BC35@microsoft.com...
>I have a Exchange 2000 server. It was setup with our old internet service 
>and
> Cisco Router. Last week, we got a new internet service, and a new Cisco
> Router.
>
> I had a Cisco guy program the router, then we changed our DNS to update 
> the
> records. Everything seemed to work fine. Incoming mail is working fine.
> Outgoing mail is a little bit weird. Here is whats happening:
>
> (These IP addresses are used hypothetically)
>
> We are using the IP address on the outside of 155.225.38.4 and the dns is
> setup for mail.myserver.com. I can verify it is setup correctly by doing a
> NSLOOKUP anywhere.
>
> But, when I SEND mail, it is delivered with the IP address of 
> 155.225.38.3,
> which is the IP address of my router.
>
> Is this a misconfiguration on our router? I don't see anything in Exchange
> that points to the external IP address.
>
> At this point, I am sending mails, but some may be confused as spam, if 
> they
> are doing a reverse lookup. Please help!
>
> Jeff
>
>
>
>

date: Sun, 18 Dec 2005 14:39:26 +0100   author:   Leif Pedersen [MVP]