On Mon, 3 Sep 2001, Marcus Fleige wrote:
> is it possible to forward the emails from that pop-mailbox to the
> customers mailserver via etrn?
no. not from the 'pop-box'. when it's in the 'pop-box' (ie had been
delivered by exim) it's essesntially out of exim's control.
you can, however "hold_domains = foo.com". this makes the messagaes to
that given domain not to be delivered, but just held on the queue. now
when the client comes in and says "etrn foo.com" then they're flushed.
---
actually there's something in etrn that bothers me. being able to
connect to an smtp server and having access to the ETRN command, i can
start a queue run to any domain i wish to. isn't that bad ? i mean, if
there are lots of mails, and the mxes for that domain are not
available, this will eat mtas resources; and this also raises a
question (be this exim-specific; i have a domain "on hold". someone
issues an etrn to that domain; this invokes exim -Rf (anything else
to try to achieve this functionality?); and this forces
the delivery.
this is ok, if i'm the one who is supposed to ask for my mails. but if
i'm just playing abusive, how will this affect the further handling of
these messages ? will those that are already in the queue be held
until the next ETRN (the ones that will arrive later will be held,
that's clear), or does a one-time -Rf cease the effect of
hold_domains ? (the latter can give a lot of opportunity to be
abusive)
