Our company is moving over to a new ISP in a week and would like to gather as much info as possible so the transition happens seamlessly without a big impact.
ISP: a company i shall not name
ISP host our DNS, MX, A records
ISP host our website NS
ISP will be hosting our DNS, MX, A records
ISP will be hosting our website as well
I think I already know the answer to this, but last week I did a dry test run on the new Internet provided by the new isp. Made changes to the firewall and internet traffic was coming through successfully. Edit the NAT on our exchange server to reflect the new wan ip. Went to the new ISP DNS portal and added a new MX and A records pointing to the new IP. Problem that i ran into was that I wasn't able to send or receive outside emails. Was that because our domain name is still hosted at the old ISP?