This optional parameter specifies a list of SNMP managers that
have access to SNMPAgent. The value is a list of host names or addresses,
separated by white space or comma. You can have any number of Managers
lines. Defaults to nothing with all hosts allowed.
# allowed SNMP managers
Managers foo.bar.edu 192.168.1.11, noc.rz.uni-ulm.de
Managers baz.bar.com,10.1.1.254