We have an ISP that receives all the email for our domain. We later use POPBeamer to download the email via POP3 and send it to our Exchange 2000 Server via SMTP. Our Exchange server is called mail.ourdomain.com. But it seems the ISP has set up mail.ourdomain.com in DNS MX record as the name to send our email to. Inside our LAN, the workstations have no problem to access our Exchange server to send and receive email. Those people travelling have more problems because when VPN'd into the server, sometimes DNS lookup gives them the Exchange server and sometimes it gives them the ISP, which means they can't connect to the exchange server. Laptops that have a wired connection to our LAN but a WIFI connection to the Internet have access to both mail.ourdomain.com's at the same time and that also causes problems. I wanted to change our Exchange server name to mailserver.ourdomain.com but that is not allowed since it is a server or a PDC or some reason. I definitely do NOT want to reinstall that server from scratch. Is there any trick to rename the server. Could I ask the ISP to rename the MX record to something like Email.ourdomain.com without causing any problems on the outside world? Another issue is that the ISP sends us most of our email via a catch-all account. But we do have a few accounts registered at the ISP for those that travel and their emails should not be sent to our exchange server but rather downloaded from the ISP directly via POP3. The problem is that users inside our LAN that try to send emails to the travelers get a bounce message. Apparently, the Exchange server looks for that user name on the exchange server itself and can't find it so it rejects the email. It would be nice if it would be possible to configure those accounts to be sent out to the ISP rather than bounced. I did try sending all emails that can not be reconciled on the exchange server out to the ISP but that caused a lot of spam or mispelled names to be sent back and forth infinitely - I had to switch that off. Thanks...
