a4c79cdd07
By default mailman3 uses a single outgoing mail runner. We have seen lists with large membership (openstack-discuss for example) delay mail delivery for 5-10 minutes. In an attempt to increase throughput we bump the number of outgoing runner instances to 4. This upstream thread [0] has more info on this and other tuning options we might consider. We start with this one as the other options have behavior implications and will need more thought. [0] https://lists.mailman3.org/archives/list/mailman-users@mailman3.org/thread/W4F2OEM4VIEEU4U6MAPVMFIEGERBMY55/ Change-Id: I9e353960fe55468be1dadffd37aada7da6ed7db0
Role to configure mailman3.