>When you say "just" before, you mean minutes minutes or the day before?
At least the current MX's record's TTL value. That's how long DNS's will cache the old MX record, say 1 day. So 1 day before the switch, drop the MX TTL to 10 minutes. After the switch, put back up to 1 or more days. Len Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list. An Archive of this list is available at: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Please visit the Knowledge Base for answers to frequently asked questions: http://www.ipswitch.com/support/IMail/
