Cyrus Postfix LMTP tuning

John Madden jmadden at
Fri Oct 14 15:06:24 EDT 2011

>> lmtp_destination_concurrency_limit = 50
>> lmtp_destination_recipient_limit = 5000
>> lmtp_connection_cache_on_demand = no
>> lmtp_data_done_timeout = 3600s
> Why do you set lmtp_connection_cache_on_demand = no?

I had issues with the cached connections.  I don't remember the 
specifics, just that things improved when I turned them off.  It might 
be a mis-configuration on the number of clients versus the number of 
allowed servers.


John Madden / Sr UNIX Systems Engineer
Office of Technology / Ivy Tech Community College of Indiana

     Free Software is a matter of liberty, not price. To understand
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