Hi, >From my reading of the documentation, there is no way to accomplish >rate-limiting of outgoing mail based on the IP address (not domain) of the >destination's relay. Is that correct?
The problem we are facing is that many of our destination email addresses have different domain names that all resolve to the same MX host. The mail exchanger is 550 rejecting our IP for sending too fast. The standard Postfix "slow transport" solution doesn't work since the domain names are all different, even though the destination IP is the same. Is there some way to base destination_concurrency_limit off of some criteria besides domain name (like a extra header we can add or something)? Is my only solution to limit the "slow" transport maxprocs to 1? Thanks for any advice! Jonathan
