Spam e-mail. Prestashop 1.6

[Tiktuger]

We have got a presashop 1.6 shop.

And there are lots of spam e-mail being sent using some form on our site. We have already tried couple of solutions, but without any result:

 

Created a module:

https://stackoverflow.com/questions/38916902/prestashop-disable-contact-form

 

Modified files:

https://github.com/PrestaShop/PrestaShop/pull/8168/files

 

According to analysis from my hosing tech support problem is somewhere in SimpleMailInvoker.php file.

 

Any ideas/recomendation apreciated.

Thanks in advance

 

 

 

Edited 10 hours ago by Tiktuger (see edit history)