On 31 Jul 2017, at 13:21, Ryan Harris via mailop wrote:
Not that we're the best neighbors in this regard, but we don't reuse
connections for the vast majority of endpoints, just the highest by
volume,
and we only keep connections open for potential reuse for 30s.
Have you considered turning the problem around?
If your volume is high enough, queueing the message and delivering in
batch will give you better throughput in most cases, provided that you
can afford to retain the messages for a while. If your volume is that
high, perhaps queueing for 30 seconds and then pipelining all pending
messages through a couple of SMTP connections could work well enough and
not upset neighbors.
Best regards
-lem
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