Hi john, Andreas,
Thanks for the replies - had not thought about ndrs so freezing them
makes a lot of sense. Just need to figure out how to only freeze those
for the domain we are migrating - if possible.
Pat
-----Original Message-----
From: exim-users-bounces@??? [
mailto:exim-users-bounces@exim.org]
On Behalf Of John Hall
Sent: 25 May 2006 16:58
To: exim-users@???
Subject: Re: [exim] Exim migration
On 5/25/06, Andreas Barth <aba@???> wrote:
> * Pat Hastings (pat.hastings@???) [060525 17:31]:
> > When the migration is finished (about 8 hours) the plan is to set
the
> > forwarding ip address to the new mailserver. This should then allow
the
> > all the emails to be delivered.
>
> Make sure you don't send DSNs back during the 8 hours, as the default
> time is usually 4 hours for the warning. You might also consider to
catch
> the mails by a special rule in exim.conf that freezes them, and then
> thawn them after you are done. (And making the freeze-rule depending
on
> the existance of a special file, which can just be deleted to allow
the
> mails through then.)
Even easier is just to put 'freeze' in the system filter:
# Exim filter
freeze
and then once everything else is up, remove it and unfreeze
everything. You could even unfreeze e-mails a little at a time:
$ exiqgrep -zi | head -n 100 | xargs exim -M
would unfreeze and deliver 100 e-mails at a time.
Cheers,
John
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