David L. Nicol writes:
>
> The situation is, that messages for certain (but not all) recipients
> on a VMS-PMDF system do not get delivered from qmail. PMDF issues
> odd error messages or drops the connections, on only these users.
> Messages to other users go through fine.
>
> I have a sloppy working fix of setting up a smtproute to the
> PMDF box through a relay running (boo, hiss) sendmail. Messages
> to these same users neither bounce nor hang up in sendmail's queue:
> these users don't have full mailboxes or something like that.
>
> Does anyone have an idea what might be happening and how to fix it?
[ snip ]
> The messages involved in these failed delivery attempts were identical
> to messages to other PMDF users which went through without difficulty.
The question is "how identical are they"? If they are the same exact
message - but with multiple recipients, then I have no answer. Otherwise,
my guess would be that the troublesome messages are 8bit MIME messages, and
the PMDF box does not accept 8bit MIME mail. Qmail violates a certain RFC
whose number I'm sure someone remembers better than I do, and attempts to
deliver an 8bit message without downshifting it to quoted-printable
encoding, to a relay that does not advertise support for 8bit MIME
messages.
Result: undefined behavior. I've seen it happen.
--
Sam
