On Thu, 01 Nov 2007 10:54:56 +0800 Ed Greshko <Ed.Greshko@xxxxxxxxxxx> wrote: > It is call "fault tolerance". In general, sending to a single IP address is > has a single point of failure. If that system is down...email doesn't move. I realize that you can have many mailservers cascading in order of availability by specifying multiple IP addresses in your MX records. However, a lot of mailservers have only one IP address specified in their MX record with no failover listed. It's part of the relevant RFP that the sending system is supposed to retry on a failure anyway, so if the system comes back up within X number of days the message is still delivered. > Sending to IP addresses doesn't scale and isn't manageable. Obviously, it doesn't scale that way, but still -- it's legal to have a single IP address specified in your MX record and that comes to the same thing, pretty much. I still don't see the difference. -- MELVILLE THEATRE ~ Melville Sask ~ http://www.melvilletheatre.com
