Hello:
This problem is interesting, and I have a question.
> > hi all,
> > i have a qmail-server, which handles mails for a small company. i
> > would like to setup a second mail-server, with an MX record with lower
> > priority as the first one, so that if the first fails, the second one
> > will receive the mails. after the first one is alife again, the second
> > one should deliver him the received mails.
> >
> > how could i implement the second server? any comments, RTFM's are
> > welcome.
>
> Put the domain(s) you're secondary for into rcpthosts. Do NOT put
> them in locals or virtualdomains.
>
> Don't forget that lower number at MX is higher priority.
That's all fine for receiving e-mails when the primary is down -- but what
if the server is running, say, IMAP, and users want to retrieve their mail?
What if the secondary receives a bunch of mail and then the primary comes
back up? Will users still be able to see the mail that the secondary server
received? DNS will point them to the primary, but the mail is still sitting
on the secondary.
If there's something I've missed here I'd be happy if someone pointed it
out.
Cheers,
Stephen Bosch
