Murray S. Kucherawy <msk(_at_)cloudmark(_dot_)com> wrote:
One of the more ubiquitous MTAs out there has a feature called
"connection caching" where it will keep some fixed number of outbound
SMTP connections around, cycled using an LRU method, in case a new
message arrives that is routed to a recent destination to avoid the cost
of making a new connection and doing the initial SMTP negotiation.
I believe Postfix and Exchange can do this.
f.anthony.n.finch <dot(_at_)dotat(_dot_)at> http://dotat.at/
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