Kmail's pakg-message states two parameters must be increased:
sysctl net.local.stream.recvspace=65536
sysctl net.local.stream.sendspace=65536
Where do I put these so they occur each boot?
I tried adding the following to /boot/loader.conf:
net.local.stream.recvspace="65536"
net.local.stream.sendspace="65536"
But that didn't work.