On Mon, 8 May 2023 13:29:48 +0000, Mike Hillyer via mailop <mailop@mailop.org>
wrote:

>Thanks, these are good best practices but I was talking more about "10 
>connections max per IP, 5 messages per connection" type of traffic shaping 
>rules.

I should mention that our systems (GreenArrow) normally offer 1 message per
SMTP session, for various practical reasons, although some of our customers
have configured their systems for other values than one.  As a deliverability
dude as well as an administrator of a small receiving system, I normally urge
1 message per session.

mdr

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