Thanks for your reply 'listmailpro'
I'd like to point out the very subtle differences between my suggestion and what worked for you.
I omitted the full path to curl because it is often found in the "system path", which means you can run it from "anywhere".
I added the "1> /dev/null 2> /dev/null" to suppress all output, which prevents you being emailed output if there is any.
Regards