Michael Maymann: [ Charset ISO-8859-1 unsupported, converting... ] > Hi list, > > Robert: thanks for your quick reply. > Sorry for being vague - This is for internal outgoing mail only (my linux > servers->my postfix relay server->ISP mailserver). > I would like loadsharing (maybe real balancing is not needed for me...) > between my linux server->my postfix relay server. > My guess is I could do this (atleast) 2 ways: > 1. DNS RoundRobin > 2. MX with equal weight > > Any thoughts: e.g. will mail actually retry delivery for all IP's listed in > DNS RR if one is not responding, or will it just directly return to > sender=local linux user without trying any of the other IP's...) ?
According to these: http://www.postfix.org/postconf.5.html#smtp_mx_address_limit http://www.postfix.org/postconf.5.html#smtp_mx_session_limit The Postfix SMTP client will try at least five IP addresses or two SMTP sessions, When it reaches either limit, Postfix will try another delivery later for several days. The retry schedule behaves as documented at: http://www.postfix.org/TUNING_README.html#hammer Wietse
