Hello On Sat, May 17, 2014, at 09:23 AM, Viktor Dukhovni wrote: > > I understand this is likely botnet-generated traffic. They occur all > > day long, typically ~1-10 times/minute. > > Typical input capacity of a Postfix mail server is over 100 messages > per second (sometimes 10s of messages per second if performing CPU- > intensive content filtering). This includes the cost of writing > the message to disk, and related processing. > > The cost of rejecting 1-10 messages per minute is negligible.
I think I was unclear. Just to be sure, by "typically ~1-10 times/minute" I meant 1-10 of these *bursts* per minute; i.e. up to ~100 messages attempted per minute. Not that it makes any difference -- from your comment, that's still well within postfix's capabilities. Thanks! Grant