On 5/29/2004 4:25 PM, Dave Crocker wrote:
EAH> 4xx means something completely different at:
Well, the 4yz response code model is actually the only reason I think
queuing _might_ be in the architecture.
5xx has the same sort of input.
^ ^ ^
| | |
| | try next host in MX set
| try next-best MX
give up entirely
4xx is worse because of things like disk space causing requeuing
Eric A. Hall http://www.ehsco.com/
Internet Core Protocols http://www.oreilly.com/catalog/coreprot/