I'm running Snap Creator 4 on AIX 6.1 and trying to use the Event Notifications feature to send fail/success messages from Snap Creator. I noticed that the Snap Creator job hangs if I include the SENDTRAP settings. Here is the section of the config with the event notifications settings:
########################################################################################################################
# Event Options #
########################################################################################################################
NTAP_ASUP_ERROR_ENABLE=N
SUCCESS_MSG=INFO: Snap Creator Framework finished successfully (Action: %ACTION)
SENDTRAP=/usr/bin/mailx -s %MSG my@emailaddress < /dev/null
SUCCESS_TRAP=/usr/bin/mailx -s %MSG my@emailaddress < /dev/null
Note: I've replaced my actual email address with my@emailaddress.
If I copy and paste the command into the command line it successfully sends the mail.