Il 6 Jul 2003 alle 0:01, Suresh Ramasubramanian immise in rete:
> Leonardo Boselli wrote:
> > where is the problem: say that the main server reply 554 saying no
> > space on disk or user overquota: sending to the secondary mx could
> > leave there the message until some space reappears on the main
> > server !
> 5xx = Permanent failure. For whatever reason it was issued, it means
> "don't retry this particular smtp transaction. Resubmit this mail
> later if you want"
exactly ... rewsubmit later could be alkso "resubmit to another MX"!
Note that the behaviour to retry on another server should be done ON:Y
iof the error is a disk space problewm.
But i have found some (even important) ISP that often reply with 5xx
error to temporary problem (such problems on their database used to
switch the message between different machines holdig mailboxes!) so
sending to another MX could get the message correctly delivered. In
such cases trying on the secondary in any 5xx error is useful.
--
Leonardo Boselli
Nucleo Informatico e Telematico del Dipartimento Ingegneria Civile
Universita` di Firenze , V. S. Marta 3 - I-50139 Firenze
tel +39 0554796431 cell +39 3488605348 fax +39 055495333
http://www.dicea.unifi.it/~leo
