[Xitami] Excessive messages

[Brian {Hamilton Kelly}]

In message <002801c50eb8$88493e80$84c86518@mtmc.phub.net.cable.rogers.com>
   <clubazur@allmail.net> writes:

> I only get one copy
> 
> His configs are probably borked
> 
> Maybe not, (Laughing) afterall Yahoo and Outlook are a recipe for disaster

FWIW, the original poster seemed to be conflating mailing lists run under
the auspices of Yahoo!Groups with this one, which is NOT hosted by Yahoo.

I have noticed myself that Yahoo's incoming MX relay mail servers (I
don't use a smart-host for outgoing mail, and receive incoming by SMTP,
not collect it by POP) can be very slow to respond sometimes.  Typically,
of the dozen or so servers that they advertise, connection attempts to
the first 2--4 will time out, and it's only when my outgoing mail client
tries one of the lower priority servers that I can send mail to
Yahoogroups.

If this happens for the mail intended for Yahoo customers too, it's not
infeasible that the SMTP dialogue between Xitami's outgoing mail client
and Yahoo's incoming server might be encountering similar difficulties:
it is an artefact of SMTP exchanges that the sending end may not assume
that the receiving end has safely got the mail until getting the correct
response (after the terminating "." on a line of its own after the DATA
command) and therefore may well resend it.

Definitely a case of the configuration of the recipient's mail system,
but probably not that local to him ;-P

-- 
Brian {Hamilton Kelly}                                     bhk@dsl.co.uk
         "Je n'ai fait celle-ci plus longue que parce que je n'ai pas eu
         le loisir de la faire plus courte."
                             Blaise Pascal, /Lettres Provinciales/, 1657