The Planet Forums > Moving mail server, need to forward

VodkaFish

Nov 10 2005, 01:41 PM

I'm hoping to use domain forwarding to push all email from one server to another during a move.

I have my domains setup like this right now:

mx record will go to:
mail.whateverdomain.com.

mail then has its own A record.

If I change that A record, will the change be instantaneous, or does it still need to propogate? If so - how do I set it up to bounce from the old IP to the new one so I don't lose any mail?

atm2000

Nov 10 2005, 03:07 PM

QUOTE (VodkaFish)

I'm hoping to use domain forwarding to push all email from one server to another during a move.

I have my domains setup like this right now:

mx record will go to:
mail.whateverdomain.com.

mail then has its own A record.

If I change that A record, will the change be instantaneous, or does it still need to propogate? If so - how do I set it up to bounce from the old IP to the new one so I don't lose any mail?

i'm doing the same thing. i'm updating my NS and MX records. I was told that i'll need to wait until the dns to fully propogate...1-2 days.

BigD

Nov 12 2005, 12:53 PM

QUOTE (VodkaFish)

If I change that A record, will the change be instantaneous, or does it still need to propogate?

It will not fully propagate until the TTL expires (excluding rare instances where the TTL is ignored). What I do whenever changing A records is drop the TTL to 300 seconds ahead of time. Once the old TTL has expired, I can change the A record and it should only take 5 minutes to propagate.

atm2000

Nov 13 2005, 05:25 PM

QUOTE (BigD)

QUOTE (VodkaFish)

If I change that A record, will the change be instantaneous, or does it still need to propogate?

It will not fully propagate until the TTL expires (excluding rare instances where the TTL is ignored). What I do whenever changing A records is drop the TTL to 300 seconds ahead of time. Once the old TTL has expired, I can change the A record and it should only take 5 minutes to propagate.

what do you mean by this?