Hi Michael,
The direct emails can arrive long before the mailing list copy
I doubt procmail is up to the job.
I send one email with a message-ID field.
- You may have zero or more copies arrive with no list-ID field.
- You may have zero or more copies arrive with list-ID field X.
- You may have zero or more copies arrive with list-ID field Y.
- And so on depending how many distinct lists send you the same
message-ID email.
You can get multiple copies from the same list, as I do, because of a
re-try after a transmission error.
All those emails may arrive in any order.
--
Cheers, Ralph.