I have a dumb question. I am in a small office environment. We use exchange server on MS Windows Server 2003. We have 3 client machineswith email access. Prior to now the MS Exchange Mail Acct. was the default account in all of the Outlooks. We changed ISPs but NOT email. Soooo, I need to enter in a new outgoing mail server. I changed the secondary accounts to match the new ISP but how do I change the Exchange Server...is this even necessary? If I make the actual email accounts the primary, outgoing mail works fine from the hosting computer, but with MS Exchange as the default account the messages never make it out. I don't recieve any errors; I just get bounce backs about 3 hours later. The client machines are WinXP Pro, Outlook 2003. The new ISP is comcast. Anyhelp would be great.

Do you know if your internet SMTP connector is configured to use DNS to route the mail or is it configured to forward all mail to a specific address. If configured to send to a specific address, it is likely that it is an address on the old ISP. Joseph Durnal

Thanks for the response. I checked this earlier, but there are actually no connectors. I thought that there should be but even with the old ISP there weren't. EDIT: when you refer to the connectors, you are talking about the connectors folder found in the root of the Exchange System Manager?

Found it: When the connectors are not configured the Smart Host needs to be changed in the Default SMTP Virtual Server. Located here: Exchange System Manager/Servers/<server_name>/Protocols/SMTP. I changed the smart host from the old one to the new ISP's SMTP server. All working.