On 22/07/11 14:01, Feng He wrote:
On Fri, Jul 22, 2011 at 5:58 PM, Tony Finch<d...@dotat.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.
Many do not.
It is safer to have >1 MX, than 1 MX with >1 A record.
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