On Mon, Aug 2, 2010 at 9:45 AM, Edward avanti <edward.ava...@gmail.com>wrote:
> <SNIP> > > > > In 4.x.x above me, the sender are known to us, his hostname presented > exist, but no PTR RR (he is get fixed but take time), it is we prefer to > 5xx, so he and others like him not wait 5 days to find mail never went, I > was think unknown_client_reject_code = 550 would be this solve, but not? > Anyway to have this so? > > It appear from more investigation this cause is SERVFAIL always send 4xx, can postifx override to 5xx with setting for SERVFAIL ? Many Thaks
