None of the out-of-the-box syslogd regex ueiMatch statements work

None of the out-of-the-box syslogd ueiMatch work

For example, the following easily reproductlible syslog message never creates an event:

Failed password for support from 2001:6a8:3c80:8004:a17e:2b7b:762f:3e65 port 60387 ssh2

My syslogd configuration is the following:

<configuration
syslog-port="10514"
new-suspect-on-message="false"
parser="org.opennms.netmgt.syslogd.CustomSyslogParser"
forwarding-regexp="^((.+?):? (.*))\n?$"
matching-group-host="2"
matching-group-message="3"
discard-uei="DISCARD-MATCHING-MESSAGES"
/>