On Fri, 17 Dec 1999, Theo Honohan wrote:
> If a director passes an address to the SMTP transport, and the
> transport encounters a failed DNS lookup, the type of the item added
> to the retry list is "R", (not "D").
Do you mean there is a setting of "hosts" on the SMTP transport? Failure
there is deliberately remembered as "R" because it is a routing failure.
"D" failures correspond to actual delivery attempts, and their retry
database keys include the IP address, which of course is not available
if the DNS lookup has failed.
--
Philip Hazel University of Cambridge Computing Service,
ph10@??? Cambridge, England. Phone: +44 1223 334714.
