Routing Services Between LANs

By hbombvi ·
Let's say I have two LANs. One LAN accesses the Internet via a DSL line hooked up to a router. The other LAN accesses the Internet using an offsite proxy server. The offsite proxy server doesn't allow SMTP, POP3 or IMAP, but the DSL LAN can use these services fine. Now let's say I've configured Win2K3 Server with one NIC on the DSL LAN and the other on the Proxy LAN. Is there any way to route SMTP, POP3 and IMAP traffic directly through the DSL LAN?

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uh.... no.

by sgt_shultz In reply to Routing Services Between ...

hi would you confirm you are talking about a mail proxy server? can you tell us what proxy? Squid maybe?
what is the post office software in use on the lan. Exchange?
what exactly is the problem? your mail services stop when you connect via proxy?

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by hbombvi In reply to uh.... no.

The Proxy LAN relies on a Microsoft ISA Server from the WAN. The DSL LAN gives everyone attached to the router a direct connection to the Internet. For some reason that the WAN administrators have yet to disclose, everyone using the ISA Proxy cannot use IMAP, POP3, and SMTP protocols through it. On the LAN using DSL these services are available. We're not using Exchange here at all. We use a business webmail package. I simply want to give my users on the Proxy LAN the option of using email clients.

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