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The way Vopmail delivers mail is causing a  problem, when delivering mail to
a big ISP that apparently does not follow RFCs correctly.  Read on.

I have noticed a big queue of 1,000 undelivered messages in
\vopmail\spool\domains\ig.com.br
IG is a very big free ISP in Brazil.    I telnetted their mail server and
noticed that they DROP the
SMTP connection as soon as you type a nonexistant user (using command rcpt
to: ).  (I think
this doesn't follow the RFC).

What happens is that if someone tries to send a message to a wrong or
inactive account, from
that point on Vopmail cannot deliver ANY other mail to this ISP. Soon large
queues form up.
Those queues never resolve by themselves. I need to intervene.

I believe this happens because Vopmail tries to send all pending messages to
a domain in a SINGLE
session. If the connection of the first message is dropped, Vopmail does not
try to send the other
messages.

Any recommendation for this kind of problem ????


Thanks,


___________________________
Saulo de Araujo Pereira
Netium Internet
___________________________


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