I would like to know what are the prior steps or things I need to aware of before I transfer from current ISP to other ISP? I know that I need to aware of the IP change and it will effect my email server as well as my internet connectivity. I appreciate your advice.
So is you new question what do you need to do to prepare for an ISP change?
You will first want to set your MX records TTL value to the lowest you can. That way you won't loose any email. Verify you can get into and update your DNS before the switch.
Change your MX record to your new IP address when that is live. If you use NAT, be sure to update that as well.
If the server has been configured with a Smart Host entry then update that.
Update your internal DNS with the new ISP DNS on the Forwarders tab of the DNS Snap-In.
That should be all you need to worry about unless you also need to move your public web site.
Pat's reference is a good one but does not mention the TTL value. I highly advise you configure that a day or 2 before your switch. The TTL is the Time To Live value. ANyone that has sent you mail keeps a cached copy of where to find your MX record. That cached copy expires based on the TTL. Typically it is 24 hours. So by setting it to say 15 minutes the people that send you mail the most will get your updated MX record faster than if they wait for the default TTL to expire.
You want to set the new TTL ahead of time by at least the value in the current TTL so that all old cached values will expire on the old TTL time and get the 15 minute time. When you switch over, any sending system that can't reach you will retry and should get the new IP.
since I have a hosting company does my DNS, then they have to update the DNS on their end, because my internal domain ends with .local, is this true? The only thing I need to do on my end will be edit the NAT on my firewall, and the rest has be to done by my hosting company. Please advice.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.