Filesystem stanza of the qm.ini file

The default permissions set on the error log files are expected to be useful in most circumstances, and therefore there is no need for most IBM® MQ administrators to alter them.

However, your IBM MQ administrator might want to alter the permissions on their error log files, in which case they should set the Filesystem stanza option ValidateAuth=No, which causes the queue manager to leave the permissions unaltered thereafter.

The default behavior (without ValidateAuth=No) is that the queue manager checks the file permissions of the queue manager error logs, and changes them back to their default values. This check can happen any time, including during a queue manager end or start operation.