Brian writes: > If you have one box that does web/e-mail/DNS, and that box goes down, > web users and e-mail senders are given an error that you don't exist. > If you have redundant DNS, you get an error that you exist, but can't > be found. IE displays the same page in both situations. At least 99.9% of users wouldn't understand the distinction and wouldn't care. The end result is the same: the service is down. > The difference is that with a single box, e-mail bounces > immediately Wrong. Email is specifically designed to work around transient failures. Any MTA that does not understand the difference between "temporary failure" and "domain does not exist" will fail horribly. A message will only bounce immediately if the domain does not exist (NXDOMAIN) or the remote SMTP server responds with a hard error code (5xx). -- David Phillips <david at acz.org> http://david.acz.org/ _______________________________________________ TCLUG Mailing List - Minneapolis/St. Paul, Minnesota Help beta test TCLUG's potential new home: http://plone.mn-linux.org Got pictures for TCLUG? Beta test http://plone.mn-linux.org/gallery tclug-list at mn-linux.org https://mailman.real-time.com/mailman/listinfo/tclug-list