Is this a safe way to multi-home a mail server?
Lars Kristiansen
lars+lister.freebsd at adventuras.no
Sat Jun 25 20:18:06 GMT 2005
> 1. Can I have both host IPs (one from each DSL net) as A records in
> DNS for the mail server's name--e.g.,
>
> mail.my.domain IN A 1.2.3.4
> mail.my.domain IN A 5.6.7.8
>
> and expect mail to arrive at the machine regardless of which network
> is working at any given time? (Part of the
Might help with the first question:
If you have two A records and someone tries to send mail to your
mailserver, a random pick is performed and if it cannot connect, delivery
fails and will be tried later with a new random choose between the A
records.
On the other hand, if you use two different hostnames with same priority in
MX record it will choose one random and try the other if it fails.
> 2. Is there a way, via routed or other means,
--
Med vennlig hilsen
Lars Kristiansen
A D V E N T U R A S
Tlf: 22 20 59 90
Fax: 22 20 59 91
lars at adventuras.no
http://www.adventuras.no
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