When trying to manually send email, I am returned the error...

"No recipient addresses found in header"

Anyone care to take a peek at the code and show me the err of my ways? 
open(SENDMAIL, "|/usr/sbin/sendmail -oi -t")
        or die "Cannot fork for sendmail: $!\n";

print SENDMAIL qq^
        From: Monitor <root\@host.domain.com>
        To: Pen Quin <penguinfuz\@another-domain.com>
        Subject: $hostname Monitoring Script

        Hello, I am the monitoring script for $hostname.
        ^;

close(SENDMAIL) or warn "Oops, sendmail did not close properly\n";

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In reply to Manually sending email. by penguinfuz

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