This issue has been addressed in SMG 10.5.2. It is not necessary to log a support case on this issue. Please update when able.
When starting the Symantec Messaging Gateway (SMG) appliance or restarting either the MTA or Control Center service, similar error message can be sometimes observed:
/etc/init.d/controlcenter: line 143: [: -ne: unary operator expected
or
/etc/rc3.d/S99mta: line 87: [: -ne: unary operator expected
SMG starts as normal and no further issue is observed.
This issue has been addressed in SMG 10.5.2. It is not necessary to log a support case on this issue. Please update when able.
Please contact Enterprise Support if you require additional assistance.