[Kjetil T. Homme]
| It's a feature, especially on large lists with long distribution
| delays or digests. That way, a dialogue can have a quicker pace
| than the mailing list host can maintain.
| Perhaps this made sense a few years ago (and it would still be a
| matter of personal opinion), but we're in 1996. Today you can buy
| a very fast Internet server for not much money at all.
It still makes sense when one of the correspondents are on the digest.
| [impressive statistics from a P133 elided]
| It's only a matter of time until most lists run on that kind of
| system. I give it a year, perhaps two.
A good portion of the mailing lists out there are based on Sendmail
aliases, and I don't think that will change much. Speaking as a
postmaster, I don't care if the lists I host take an hour until they
reach the last recipient, and I won't install special software to fix
it. Unless Sendmail sees some serious optimization regarding long
recipient lists, you're too optimistic.