Possible log properties have to be changed
from:
com.openexchange.ajp13.threadName, com.openexchange.ajp13.remotePort, com.openexchange.ajp13.remoteAddress, com.openexchange.ajp13.requestId
to:
com.openexchange.ajpv13.threadName, com.openexchange.ajpv13.remotePort, com.openexchange.ajpv13.remoteAddress, com.openexchange.ajpv13.requestId

and the default log.propertyNames have to be changed
from:
com.openexchange.log.propertyNames=com.openexchang e.ajp13.remoteAddress(ERROR),com.openexchange.ajp1 3.remotePort(ERROR)
to:
com.openexchange.log.propertyNames=com.openexchang e.ajpv13.remoteAddress(ERROR),com.openexchange.ajp v13.remotePort(ERROR)