This
applies to new IPs on the SAME machine. It's really not that
bad.
I
went through this when I got my own IP block from ARIN. The best way to
do this is to simply add the new IPs to the server leaving the old ones
intact. PLEASE do a backup first. Then go into IMail Administrator
- all of the new IPs should default to being assigned to the primary
domain. You'll have to edit the IPs within Administrator to give the new
ones to other dedicated-IP domains. BE CAREFUL - you can accidentally
overwrite/destroy domains while doing this. I don't remember the exact
warnings you get, but just read the wording carefully. Remember that
backup you did before starting? :)
Once
you get the IPs assigned (don't worry about virts, they take care of
themselves) you can make sure the IP domains are responding via webmail by
opening a browser to the new IP addresses. If all looks good, just
change your DNS hostnames (mail.whatever.com) to reflect the new IPs.
Then in about three days (depends on your TTL) you can remove the old IPs from
the box. Just be sure you notify any customers getting mail by IP
instead of hostname (possibly ETRN customers).
If
you are discussing moving to a DIFFERENT machine then see a post I put up
here a bit earlier today/yesterday.
BTW
- I also used this technique when I put a second NIC in my mail server.
I gave each dedicated IP host a second IP address in another subnet. I
had the mailserver connected to two different switches on the NICs. I
then made 'mail2.whatever.com' records for every domain (real and virt) and
made that a secondary MX record. That way if either switch failed or if
a NIC/patch cord went bad I had a second path into the machine. Worked
great. I now just use my SMTP boxes to do secondary.
Sorry about the incorrect subject and extra mail in the
previous posting. I did a reply all to another message and hit send too
soon, it's been a really long day.
We are using iMail's user database and need to move
all of our email (and web) accounts to new IP addresses. We have both
dedicated IP address and virtual (non-dedicated ip) domains. What is the
best (easiest) way to do this. We are also considering moving the iMail's
user database to SQL 6.5, any suggestions on an easy way to do this..
Thanks,
Roger
