If you are mostly having problems with sendmail refusing more connections, , and you have reasonable resources available (eg free memory) you might be better off tweaking these # load average at which we just queue messages O QueueLA=15 # load average at which we refuse connections O RefuseLA=20 # maximum number of children we allow at one time O MaxDaemonChildren=12
Thanks for the explanations of the takeouts I have increased the
O QueueLA=25 O RefuseLA=40 O MaxDaemonChildren=24
and all is running fine at the moment my load average is like .03 and so far sendmail is running great