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fallback_relay and smtp connection caching with DNS round-robin
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Josiah
Jun 29, 2012, 1:19:34 PM6/29/12
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I have a fallback_relay specified in main.cf that is a DNS round-robin for 4 equally weighted IP addresses. The mail being sent by clients can be quite "bursty". This causes uneven distribution to the 4 IPs for the fallback_relay FQDN.
I have read http://www.postfix.org/CONNECTION_CACHE_README.html and http://www.postfix.org/scache.8.html
I am using Postfix 2.9.3
My goal is to set smtp_connection_cache_on_demand = no just for the smtp client connections to the fallback_relay. Everything else can have the default settings for smtp client caching.
My understanding is i must specify a host or IP in the fallback_relay parameter, and not a transport. Otherwise, i would just create a new transport, use it for the fallback_relay and set an override for smtp_connection_cache_on_demand for that transport.
Is what i am trying to setup, possible?
I have read http://www.postfix.org/CONNECTION_CACHE_README.html and http://www.postfix.org/scache.8.html
I am using Postfix 2.9.3
My goal is to set smtp_connection_cache_on_demand = no just for the smtp client connections to the fallback_relay. Everything else can have the default settings for smtp client caching.
My understanding is i must specify a host or IP in the fallback_relay parameter, and not a transport. Otherwise, i would just create a new transport, use it for the fallback_relay and set an override for smtp_connection_cache_on_demand for that transport.
Is what i am trying to setup, possible?
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