Hi, I would think they would have to tell you the volume and or rate at which they intend to send the mail. By default Postfix lets the queue grow to 20,000 emails I think, and then may stop accepting until it can process some, and start accepting more.
Any reason you haven’t been reading this? http://www.postfix.org/TUNING_README.html And making some educated guesses ? You know the total volume 300-500K. all you care about is Rate, how fast are they going to send them ? Good Luck. -ALF -Angelo Fazzina Operating Systems Programmer / Analyst University of Connecticut, UITS, SSG, Server Systems 860-486-9075 From: owner-postfix-us...@postfix.org [mailto:owner-postfix-us...@postfix.org] On Behalf Of Zalezny Niezalezny Sent: Tuesday, April 11, 2017 4:24 AM To: Postfix users <postfix-users@postfix.org> Subject: relay server - mass mailing tuning Hi, in the next days our external service provider will push to our relay server (Postfix) regulary ~300 000 - 500 000 E-mails with size 60-500kb. External system provider has a SMTP server farm, so it will send messages from ~20 IP`s to our single Postfix instance. My question is, do I need to tune anything in our Postfix relay to receive and transport such a big amount of messages in single session ? What kind of settings should I setup to keep performance on the optimal level and to avoid situation with too many connections etc.etc. Could You please advice here ? Thanks in advance for any support. With kind regards Konrad Wawryn
