RE: [IMail Forum] Changing IP addresses in iMail

[Andrew Cook]

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. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Roger Weiss Sent: Friday, September 17, 1999 2:13 AM To: [EMAIL PROTECTED] Subject: [IMail Forum] Changing IP addresses in iMail 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