Hi Viktor, Wietse also replied to say I wasn't able to solve this with Postfix. > > What kind of "load balancing"? Why won't MX records do? For uneven > weights, you can even use SRV records: >
I'm trying to setup load balancing across a cluster of relays for a SAAS application. There's several problems I was hoping to solve: 1) distributing workload 2) IP warm up when adding nodes 3) avoiding dilution effects of spreading the workload (I only send a few emails to hotmail, for example) 4) separating out very badly performing receiving MTAs 5) adapting workload distribution according to host availability and current health (load, free memory etc) Blindly distributing the traffic at the TCP level works for 1&2 but DNS is too slow for 5, while 3 & 4 need information about where the email is going. > What sort "customised routing"? > Mostly large block lists (you expect users to actually manage their data?). > That's what sender_dependent_default_transport_maps is for. > Policy server doesn't work in this context. > It isn't actually a good tool for this, since it cannot affect > fine-grained per-recipient routing in multi-recipient messages. > It can only return FILTER actions which affect all recipients, > and the intent is to support content scanning, not fine-tune > routing. > That I could have lived with. C. -- -----BEGIN GEEK CODE BLOCK----- Version: 3.1 GCM d s+:+ a+ C+++(---)$ UL+++ P+(--) L+++ E--- W+++ N++ w-- PS++(+++()) t+ 5+ X R- tv-- b++ DI++ D e+++ h---- ------END GEEK CODE BLOCK------ _______________________________________________ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
