On Tue, Oct 12, 2004 at 07:04:12PM -0700, Greg Connor wrote:
| A domain name that has an MX record is, by definition, intended to be used
| for email, unless the record is domain. IN MX 0 . -- so we can give that
| domain the benefit of the doubt, such as allowing a "best guess" a/24 mx/24
| ptr ?all
|
| A domain name that has an A record may or may not support email, so a
| sensible practice might be to apply +a -all as the "best guess" -- though I
| would not want to do this on a production site without running in log-only
| mode for a few weeks, or at least seeing encouraging results from someone
| else applying the rule.
hey, that's really smart.