my evaluation time for your tool ends here. i will ask our mq support for a supported solution other than ibm mq explorer. thanks for your given support so far. i will return to your tool when our mq server will be upgraded to newer versions compatible with your auth.

client side: none. server side: same

same error result with neither user id nor password passed.

LSB Version:    :core-4.0-amd64:core-4.0-ia32:core-4.0-noarch:graphics-4.0-amd64:graphics-4.0-ia32:graphics-4.0-noarch:printing-4.0-amd64:printing-4.0-ia32:printing-4.0-noarch

Distributor ID: RedHatEnterpriseServer

Description:    Red Hat Enterprise Linux Server release 5.6 (Tikanga)

Release:        5.6

Codename:       Tikanga

i gave nothing (empty word) as password.

Redhat

"-a" option is unknown. output of lsb_release is 

LSB Version:    :core-4.0-amd64:core-4.0-ia32:core-4.0-noarch:graphics-4.0-amd64:graphics-4.0-ia32:graphics-4.0-noarch:printing-4.0-amd64:printing-4.0-ia32:printing-4.0-noarch

True. no password is passed. only user. the support said, the is always a "." (dot) as password. the message is:

09/07/2017 11:32:03 AM - Process(3173.22172) User(mqm) Program(amqrmppa)

                    Host(vvm267) Installation(Installation1)

                    VRMF(7.1.0.6) QMgr(QMMANAGER)

AMQ9777: Channel was blocked

EXPLANATION:

The inbound channel 'CHANNEL.SVRCONN' was blocked from address '10.xxx.xxx.xxx'

because the active values of the channel matched a record configured with

USERSRC(NOACCESS). The active values of the channel were 'CLNTUSER('.

ACTION:

Contact the systems administrator, who should examine the channel

authentication records to ensure that the correct settings have been

configured. The ALTER QMGR CHLAUTH switch is used to control whether channel

authentication records are used. The command DISPLAY CHLAUTH can be used to

query the channel authentication records.

what mq client version do you use?

Linux vvm267 2.6.18-238.5.1.el5 #1 SMP Mon Feb 21 05:52:39 EST 2011 x86_64 x86_64 x86_64 GNU/Linux

MQ 7.1