Email-will not be send

I have a .php site and followed all instructions below. My problem is as follows. Giving up no email goed ok (required message), giving up an unknown message will be checked against the database and I get the error message I gave up. The page is even redirected when I only give up below smtp.gmail.com on port 587. If I take it away it will not be redirected. BUT also when i give up my personal emailaddress and password nothing will be send, only a redirection takes place,

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