On Wed, Mar 23, 2011 at 03:06:04PM -0700, Jeroen van Aart wrote: > I am curious if postfix would be able to send out 300000 emails in one > hour, to different recipients of course. Taking into account > http://www.postfix.org/TUNING_README.html and other such performance tuning > guides. This would only happen once a week or so. The important part is the > need to send them all in one hour, more or less.
$ echo 1k 300000 3600 / p | dc 83.3 Postfix will easily handle 83 deliveries a second, provided that: - The disk subsystem is server-grade. - The network link can sustain the output bandwidth - The destination networks are not throttling your output or severely limiting your concurrency. > Considering 300000 per hour equates to about 83 emails per second and given > a reasonably fast server (over specced since I doubt CPU and RAM would be > the bottleneck here) I would think one server could handle this. A lot depends on where the mail is going and the concurrency limits and delivery latencies of those destinations. -- Viktor.