In SIMS Digest #1585, Christian F Buser <[EMAIL PROTECTED]> wrote: >> I need to change the physical location and IP number for our SIMS >>box. I know >>that I can take over all settings etc. by just >>copying the SIMS folder in the >>system folder to the new machine. >> [remainder deleted]
To which Devon Ferns <[EMAIL PROTECTED]> replied: >Doesn't one usually decrease the TTL for the DNS entry before it is changed on >the DNS server? That would allow the rest of the world a pretty quick change >to the new records. Decreasing the TTL(s), along with adding an MX record (of equal or lower priority) for the new server, would limit your "downtime" to whatever you lower the TTL(s) to -- that's assuming, of course, that you make these DNS changes soon enough; that is, if the current TTL on your MX record is 2 days, and you are going to change the TTL(s) to 1 hour, be sure to make the change at least 49 hours (2d + 1h) before your "old" server goes away. Then, as soon as your satisfied that your new server is up and running (reliably!), change the TTLs back to whatever you'd like. Any connections that attempt to go to the old server during the 1-hour transition time should get retried periodically until they hit the new server (although the "Queue Return" time is configurable on most mail servers, I have never seen anyone set it lower than 4 hours, and for many cases the default is 5 days). Michael A. Pasek Pasek Consulting, Inc. 9741 Foley Boulevard NW Coon Rapids, MN 55433-5616 (612) 597-5977 [EMAIL PROTECTED] ############################################################# This message is sent to you because you are subscribed to the mailing list <[EMAIL PROTECTED]>. To unsubscribe, E-mail to: <[EMAIL PROTECTED]> To switch to the DIGEST mode, E-mail to <[EMAIL PROTECTED]> To switch to the INDEX mode, E-mail to <[EMAIL PROTECTED]> Send administrative queries to <[EMAIL PROTECTED]>
