I have do some benchmarks with postfix, where we send out 6 KB HTML Mails. We followed all tuning instructions published by Postfix and used Ramdisk for the queue.
We was not able to send above 50 Mails / sec out.
Has anyone some input how we can improve that numbers?
The Server is only used for outgoing Mails.
Only to mention: I'm not a spammer :-) We will use it for a dating site where we send a big amount of Mails out for Notifications, weekly reports, daily stats.