When attempting to release a message from the bad message queue, you get an error,
Use of uninitialized value $sender in concatenation (.) or string at
/opt/Symantec/Brightmail/mta/lib/perl/SMS/MTA.pm line 2233.
command failed with 1 at /usr/share/perl5/vendor_perl/SMS/Common.pm line 1363.
This issue has been resolved in version 10.7.5 and later. The resolution will be to upgrade to version 10.7.5.