[TYPO3] Undelivered Mail Returned to Sender

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I'm not sure that this is the right place, but here goes: I'm trying to
implement the reCaptcha extension onto the backend login page. The only
problem is, when I copy the script from the instructions, it returns a
parse error. Here's the line in question:

require_once(t3lib_extMgm::
extPath('jm_recaptcha')."class.tx_jmrecaptcha.php");

Thanks for your  help.