SMTP mail flow

For incoming eg if the MX is pointed to firewall ,create rule that mail should be delivered  to exchange instead of websense filter from firewall .for outgoing  check the outbound configuration and make rules accoridingly in the firewall

If you want to prevent unfiltered email going through the server then you have no choice but to cut the connection.
Email will queue on Exchange and remote servers will queue the email at their end. As long as you have the server back in a few hours the most that the senders will get is a delay message, not a failure message.

Another option would be to build an IIS server (ie Windows 2003 with just IIS installed) and configure it has an SMTP gateway to accept the email and then queue it. When your main server is live the email will flow through to the server in the usual way.

-M

M

So I would need to change the port forwarding rule on our Firewall to route SMTP mail to the temporary IIS server, where messages would presumably remain in that queue?  

What happens to those queued messages on the IIS server when the Websense SMTP E-Mail filter is brought back on line and mail is redirected to flow through it?  

I dont really want senders to receive delayed message delivery replies, so I need to understand what happens to mail sitting in the IIS server SMTP queue?