We are distributing a daily email to our subscribers -- which generates a
large burst of email. We have main.cf configured as follows:
sender_dependent_default_transport_maps =
randmap:{r192,r193,r194,r195,r196,r197,r198}
smtp_connection_cache_on_demand=no
Distributing the traffic across seven ip addresses is working well for all
but one major transport.
This one majortransport is complaining about too many connections even
with:
majortransport_destination_concurrency_limit = 4
I am configuring majortransport to use a single ip address in master.cf to
reduce the number of connections. I hope this will allow an increased
destination_concurrency_limit and better throughput for majortransport.
This seems like a good scenario to
use smtp_connection_cache_on_demand=yes. Is it possible to configure this
for just majortransport? It seems turning on the connection_cache for the
entire installation will reduce the randomness and effectiveness of the
randmap.
Thanks, Greg
www.RayStedman.org
