On 3/2/2016 1:30 AM, Viktor Dukhovni wrote: > On Tue, Mar 01, 2016 at 07:32:02PM -0500, Ron Guerin wrote: > >> On 2/29/2016 12:19 PM, Viktor Dukhovni wrote: >>> For submission of list messages to a large number of recipients, >>> I would generally use sendmail(1) rather than SMTP. Don't know >>> whether mailman supports that. >>> >> >> It does, but its use is "highly discouraged". > > Perhaps they have their reasons, I would not be so sure they are the > right reasons, but if their implementations handles this poorly, so > be it. It *should* work well (potentially quite a lot better than > SMTP, as the recipient list gets really large, unless the list > expansion is done by Postfix via a :include: local alias). > > So my guess is that the Mailman developers don't understand Postfix > well enough to use it properly, but the converse might also be true.
I used to use the Sendmail delivery module. It works, and I don't know why they discourage its use, but I switched to SMTP over the years with new installs and upgrades because when the authors of your software "highly discourage" something, it's time to change. I haven't had any problems since switching, and my lists are almost certainly about the same size as Ruben's. The comments earlier about his lists being dirty (as in full of dead addresses) caught my attention though. I don't know whether or not his Majordomo kept his lists clean, and Mailman's own list cleaning is pretty ineffective in all of my own use cases until you change the settings. - Ron
