Thanks for the response. I will contact them and ask about that.

Do you know why solution 1 works? Is it because I already have
an existing IPSEC connection? Site 1 is 192.168.1.x and site 2 is
192.168.2.x. I've come to the conclusion that the other situation
with my work PC only worked because I had already logged on
the domain before I disconnected and when I reconnected via
dialup and then VPN, it recognized me. At home, the VPN
connection does not allow me to use the networks Internet
connection, which is actually a good thing.

And yes, all this fuss for one email connection, but it is an
important one, nonetheless. Number 2 and 3 sound somewhat similar.
I was using the cable company's mail server with authentication
and it was working. Sigh.......
Tom

--------------------------------------------------
From: "Tony Tibbenham" <[log in to unmask]>
Sent: Wednesday, April 15, 2009 10:57 AM
To: "Tom Hula" <[log in to unmask]>
Subject: RE: [HP3000-L] OT: VPN Mystery

> Hi Tom,
> 
> How many PC's / email accounts is this for?
> 
> You have built a VPN from your 2nd site to your main site and told mail
> to flow down it so all outgoing mail is going out of your main sites
> internet connection to your main cable ISP's mail server hence the IP
> address and domain names resolve 'correctly'.
> 
> 3 solutions:
> 1. Keep the tunnel so 2nd site always send/receives through the main
> site IP's ( trebling bandwidth used )
> 2. Get your cable ISP's network guru's to add your wireless ISP's mail
> server as a backup MX record in your companies DNS so it is then OK for
> that ISP to send mail on your behalf [ as it was doing ... ]
> 3. Use your wireless ISP network but connect for mail to your cable
> ISP's mail server ( may need authentication and depends on whether both
> ISP's support it ).
> 
> In the short-term solution 1 is working.  Solution 2 is better long-term
> as that gives your sites some mail independence just get the DNS set up
> and wait 48 hours for it to propagate across the internet before turning
> off 1. to try it.
> 
> Your ISP's should have offered to sort this for you ...
> 
> Regards,
> 
> 
> Tony
> 

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