I assume you still want to use the autoresponders for other addresses, so can't just outright disable it.
Another option, which would involves modifying the script, might be to create a list of emails not to send autoresponders to, thus preventing the loop in the first place. Then check the list to make sure the email address isn't present before a response email is sent.
You'd have to manually build up the list of email addresses yourself, but you could potentially add wildcards such as noreply@*, etc. depending on how you wanted to code it.
