p.mayers at imperial.ac.uk
Fri Jul 22 13:03:51 UTC 2011
On 22/07/11 14:01, Feng He wrote:
> On Fri, Jul 22, 2011 at 5:58 PM, Tony Finch<dot at 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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