Am 02.09.2012 11:43, schrieb Sam Jones: > More to satisfy my own curiosity than anything else, I'm wondering about > the performance that could be squeezed out of Postfix in a bulk mailing > capacity. > > I have a client that currently uses and ESP who have an astounding > throughput of up to a million messages per hour. This brought up a > discussion about high-performance MTAs and tuning and the general > comments I'm hearing are that things like Postfix, Exim, Sendmail & > are just not man enough for such a task and the absolute best you could > expect from any of them is about 100k messages per hour. > > Now, I like to wipe out the fact from fiction because people like > PowerMTA are looking to sell their products and it would be in their > interest to neglect that any MTA (Postfix/Exim/Sendmail) could be set up > in a way that would easily rival their product. > > Can anyone on the list tell me if it's possible to performance tune > Postfix to a point where it could complete with this and possible > strategies? > > Kind thanks >
Hi look on list archives about tuning stuff also read http://www.postfix.org/TUNING_README.html at last , there are two side deliver in/out for out ,there are things you need to find out about the recipients mail servers, cause many of them have limits about get mail from the same ip adress per time periods,and/or do greylisting and other filter stuff, so its not only a question how to tune your own postfix ( which may always be possible to goal your needs, depending on hardware, filesystems network etc ) for massive bulk mails sometimes multiple instance postfix or a cascade with smtp fallback postfix servers is used for fasten deliver out mail. Also possible smtp via loadbalancer etc. At last there are a lot other recommands ( whitelisting at big mailers , use dkim and spf dmarc etc ) doing massive mail which arent related directly to the mailserver software you use, for sure postfix will never be the performance problem if setup right to your "massive" needs. In fact postfix is widly used for massive mail. -- Best Regards MfG Robert Schetterer
