A few months ago, due to having an open relay up for POP3 accounts with our Field Staff, we ended up on a blacklist of Yahoo's and were unable to E-mail the domain. We're off now but are still having problems e-mail yahoogroups.com. We've tried everything with Yahoo and they've been uncooperative. I've done some digging and need help with the following:
a three server network:
Server Alpha - a domain controller and does our DNS and DHCP
Server Beta - is our Exchange 2003 server and is also a domain controller
Server Delta - is not a domain controller but is a member and opperates our Wireless Device push client as well has our network printers installed on there (Wireless Sync by intellisync)
We use 2 of our 4 external IP addresses, one goes from the router to the switch to server alpha the other goes to the router and we use a one to one nat on the router to connect the interal IP of Server Delta to an external IP (required for WSES software).
I've done a little reading about using Exchange Connectors to send E-mail out over a different server connected to a different IP, does anyone have any idea or help they can offer me?