MX choosing

Feng He shorttag at
Fri Jul 22 13:01:06 UTC 2011

On Fri, Jul 22, 2011 at 5:58 PM, Tony Finch <dot at> wrote:

>  The question of whether a sender should attempt retries using the
>  different addresses of a multihomed host has been controversial. The
>  main argument for using the multiple addresses is that it maximizes the
>  probability of timely delivery, and indeed sometimes the probability of
>  any delivery; the counter-argument is that it may result in unnecessary
>  resource use.

In any case, the SMTP client SHOULD try at least two addresses.

More information about the bind-users mailing list