> I think anvil is a poor fit for the problem description. > Anvil monitors plant-wide rates, and may trigger client > backoff, while the OP wants a single connection re-use > limit, which does not require an external counting process, > each SMTP server alrwady has all the data it needs locally.
I guess this means that the single connection re-use limit could be implemented inside each SMTP server, without any policy server. But it is not yet available in the current version of Postfix (I'm using 2.2 myself). Correct? The upstream is not caching connections because it is not delivering to multiple hosts. The farm is seen as a unique IP, highly available, to which all messages must be delivered. The need to balance is cosmetic now, but I'm looking for a solution for this issue because, if traffic grows, I'd like to be able to add servers to my farm, which right now would be useless. Diego
