On 11/10/20 4:40 PM, Mark Sapiro wrote:
On 11/10/20 1:22 PM, Mark Dadgar wrote:
Brian specified:
verp_personalized_deliveries: no
Doesn’t that default back to regular mass delivery, as opposed to individualized VERPed envelopes, which mandates individual deliveries?
That depends on the setting of verp_delivery_interval. If verp_delivery_interval = 1, every message will be VERPed regardless of verp_personalized_deliveries. If verp_delivery_interval = 0 and verp_personalized_deliveries = no, deliveries won't be VERPed as you note. If verp_delivery_interval = 0 and verp_personalized_deliveries = yes, only personalized deliveries (i.e. individual messages, not digests, from lists with Personalization enabled) will be VERPed.
The theory is VERPing has a cost because it requires a separate message sent to each recipient rather than a single message with multiple recipients, but personalization also requires a separate message sent to each recipient, so those can be VERPed at no extra cost.
But to be clear, automated bounce processing does not require VERP. It just works a tiny bit more reliably with VERP.
We actually enable VERP by default on all new installations of Mailman 3 as we don't see a real performance hit and its benefits are generally very good. This new list however was a whole different beast. Also due to the nature of the list, the benefits of VERPing pales in comparison to the timeliness of the mail being sent.
--
Brian Carpenter Harmonylists.com Emwd.com