On Mar 5, 2009, at 7:33, <du...@linuxgeek.org.uk> wrote:
Hi guys,
I have a couple of quick questions:
1) How long does a message sit in the postfix queue for before it
attempts
a redeliver (a deffered message sat in the deffered queue)?
2) If you have a mailserver (postfix, dovecot, virtual users/domains
mysql)
and you have a back-up MX record set if the main mailserver goes down
(reboot) and a mail gets sent to a domain hosted on the server, it
gets no
response from the main mailserver so reverts to the backup. It
delivers
the mail to the backup and then defers it
Your backup MX is deferring the message? As far as the sender is
concerned, once the message is accepted by your server, it should be
considered delivered, no?
because it cannot be sent to the
main mailserver, it then sits in the deferred queue until the main
mailserver is back and gets delivered. wonderfull... the question
is, if
the server is down due to a reboot for whatever reason so say 5 - 10
minute
downtime. The original message will be sent, goto the backup mx, it
will
get deferred until mailserver is backup then delivered... BUT I
tested this
with hotmail, and what I get is, hotmail defers the message as well as
sending it to the backup mx, so that when the backup mx delivers the
mail
which goes through fine, hotmail are retrying as well, and you end
up with
two of the same message? How do you overcome this?
Um, hosts.deny hotmail? ;)
