Hi, thank You very much for Your support.
Cheers Zalezny On Wed, Nov 25, 2015 at 12:22 PM, Wietse Venema <wie...@porcupine.org> wrote: > Zalezny Niezalezny: > > 1) what will happend with an E-mails if RELAY02 will not be available > for a > > few hours ? In my understanding Postfix will put all E-mails to the > > deffered queue and it will store messages there till RELAY02 will not be > > available again. > > Is this correct ? > > This is required by the SMTP protocol, see RFC 5321. > > > 2) If Outage will take few hours (till one day). > > How much disk space do I need to prepare for all messages ? Is there any > > parameter in Postfix which limiting number of messages in the deffered > > queue ? What kind of message will be send to the client if deffered queue > > will be full ? > > Perhaps a surprise: Postfix stops accepting mail when the queue is > full (queue_minfree parameter). As required by the SMTP protocol, > the up-stream SMTP client retries deliveries until Postfix accepts > mail again. > > > How to properly plan disk space and queues for high loaded systems. > > With multiplication and addition. > > Wietse >
