On Thu, 15 Feb 2007 12:18:12 +0000 (GMT), Philip Hazel <[EMAIL PROTECTED]> wrote: >On Thu, 15 Feb 2007, Marc Haber wrote: >> The system in question is running with queue_only = true to take >> advantage of the two-stage queue running process invoked by exim -qq. > >That is an unusual configuration, for which the default settings were >not designed. Not only is remote_max_parallel relevant, but >same_domain_copy_routing is probably wanted here. You would find that if >you grepped the spec for "mailing list".
same_domain_copy_routing is set by default in Debian systems, which was incidentally used on the system at hand. I actually grepped the spec for mailng list and did not find any mention of remote_max_parallel in a one hundred line vicinity of "mailing list". >> The current case, where an alias is used to expand a single address >> into a list of 20K recipients, is a "first" for me and I was >> dumbfounded by exim not having delivered to the first thousand >> recipients after an hour. > >You are lucky it works at all - not Exim, which should manage 20K >recipients - but if you try to send a single copy somewhere with more >than a few hundred recipients, it may get rejected. I am aware of that. However, the method of address list delivery was forced upon the local admin, and he didn't have the time to find a light-weight software which would do the splitting in a sensible manner. Anybody can recommend one? >More than 100 recipients in the same domain is therefore risky. I know that. The end customer didn't seem to care. >Another >point is that, with 20K recipients, Exim will use a lot of main memory >(but that may not be an issue in these days of multi-gigabyte memories). That's a non-issue. >> Unfortunately, the system owner decided to replace exim with postfix >> before I found out about remote_max_parallel. Postfix delivers to all >> 20K recipients in like five minutes. > >So Postfix is clearly optimized well by default for this application. Yes. Without having looked at postfix any closer, I suspect that postfix does not use a per-message lock as exim does. Greetings Marc -- -------------------------------------- !! No courtesy copies, please !! ----- Marc Haber | " Questions are the | Mailadresse im Header Mannheim, Germany | Beginning of Wisdom " | http://www.zugschlus.de/ Nordisch by Nature | Lt. Worf, TNG "Rightful Heir" | Fon: *49 621 72739834 -- ## List details at http://www.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://www.exim.org/eximwiki/
