error "command substitution"

[MaDill]

I receive an error for "command substitution" when use this sendmail script.

/usr/sbin/sendmail: command substitution: line 33: syntax error near unexpected token )´ /usr/sbin/sendmail: command substitution: line 33: echo "$stdin" | head -n5 | grep -i ^to:.*@${HOSTNAME}>)´

I then removed the ">" and it was working.