vi...@vheuser.com: > On 2020/06/16 13:42 PM, Wietse Venema wrote: > > vi...@vheuser.com: > >> Obviously I am above my pay grade here, > >> but can this? "Adding some artificial 'cost' value" currently be done? > > No. There is an existing solution that works for multi-recipient > > list mail. That solution does not work for single-recipient list mail, > > which we suspect is your use case. > > > > Viktor proposes to schedule single-recipient list mail from the > > same sender as if it is multi-recipient list mail (post-facto grouping). > > > > I'm proposing to just put a cost on each delivery request, initially > > based on how many other requests a sender already has in flight, > > that decays over time until the request is selected for delivery. > > This guarantees that all mail will eventually be delivered. > > > > This also would give us the option to make the scheduling dependent > > on message size, or quality-of-service indicators. > > > > Wietse > Just fyi - > Mailman domain concurrency is a yes/no/full option. > I've limited postfix to 5 and set Mailman to yes > and that sped things up dramatically > with no rejections from TWC.
Perhaps you set some Postfix xxx_destination_recipient_limit=1. As documented that makes the Postfix concurrency limit a per-recipient property, which increases the total concurrency for a destinaion domain. Wietse