Re: Redundant mail server
On Sun, 13 Feb 2005 22:10:18 -0800, Curtis Vaughan <curtis@npc-usa.com> wrote:
> Not sure whether redundant is the right word. Anyhow here's the
> question:
>
> We have an office in the US and overseas.
> The mailserver used by the overseas office is in the US office. Of
> course, occassionally there may be downtime for the US office. So the
> overseas office has this idea that we could set up a backup mail server
> in their office. They would then use the backup mail server should the
> server in the US office be down.
>
> Well, I've explained to them that that won't really work - which the IT
> admin over there agrees with, but then keeps pursuing the question. So,
> I want to know definitively whether I am right or not.
>
> The problem as I see it is this. Fine they have a redundant server, but
> it wouldn't be able to recieve any mail, because the domain name for
> the mail server points to the US office. There is no way that I'm
> aware of to rapidly switch the IP address of the mail's domain name and
> then switch it back when the US office mail server is back up.
You can add to the your DNS zone configuration any number of mail
servers (0,1,2,3 is the priority, it will try 0, then 1, then 2 ...):
IN MX 0 mailUS.example.com.
IN MX 1 mailCH.example.com.
IN MX 2 mailBR.example.com.
IN MX 3 mailUK.example.com.
I don't know how to configure the backup mail server to send the
backed up mails to the main server when it is up again.
>
> Thanks for any input.
>
> --
> To UNSUBSCRIBE, email to debian-user-REQUEST@lists.debian.org
> with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org
>
>
--
--Nicolas
Reply to: