...

Enable Queue Manager Monitoring and Statistics

The MONQ and MONCHL must be set to MEDIUM or higher to enable MQ to publish the Status and event information.

Use the MQSC commands below to modify the queue manager configuration and restart the LAMAXU agent.

ALTER QMGR CHLEV(ENABLED) +
MONCHL(MEDIUM) +
MONQ(MEDIUM) +
PERFMEV(ENABLED) +
STATCHL(MEDIUM) +
STATQ(ON) +
FORCE

Define the Lamaxu Channel

...

MQ8/9 Unauthenticated Setup

To disable the security on the SVRCONN channels execute the following runmqsc commands below.

Note: this should only be performed in DEV for testing purposes.

ALTER AUTHINFO('SYSTEM.DEFAULT.AUTHINFO.IDPWOS') AUTHTYPE(IDPWOS) CHCKCLNT(OPTIONAL)
REFRESH SECURITY TYPE(CONNAUTH)
ALTER QMGR CHLAUTH(DISABLED)

MQ8/9 Authenticated Setup

To enable username/password authentication on the queue manager, the changes below need to be made to the queue manager configuration.

NOTE: The CHLAUTH(DISABLED) command below is required to disable the IP address filtering on CLIENT channels that MQ has enabled by default.  Disabling CHLAUTH does not disable username/password checks. I suspect this may the cause of your issues.

The commands below are MQ 'runmqsc' commands that need to be executed by an MQ privileged user, like the 'mqm' user. 

ALTER QMGR CONNAUTH(USE.PW) CHLAUTH(DISABLED)
ALTER AUTHINFO(USE.PW) +
AUTHTYPE(IDPWOS) +
FAILDLAY(10) +
CHCKLOCL(OPTIONAL) +
CHCKCLNT(REQUIRED)
REFRESH SECURITY TYPE(CONNAUTH)

Setmqaut OAM Commands

...

AUTHREC OAM Authorities

ZOS RACF Commands for Events, Accounting and Statistics

...

PE {QMGR}.RESET.* CLASS(MQCMDS) ID({USER}) ACCESS(CONTROL) 
PE {QMGR}.QUEUE.* CLASS(MQADMIN) ID({USER}) ACCESS(CONTROL) 
SETR GENERIC(MQCMDS) REFRESH 
SETR GENERIC(MQADMIN) REF
SETR RACLIST(MQADMIN) REF

MQ command

...

Multi-Instance Queue Managers

Queue Manager SSL Configuration

Password Obfuscation