Don't receive e-mail from contact form or orders after setting up an email forwarder

[Details Art Studio]

Hi,

 

I just tryed to set up a holiday autoresponder for prestashop e-mail. The holiday responder didn't worked so I delete it. Now I don't receive any email from prestashop contact form or order notification. The clients also don't receieve any e-mail when placing an order. But the email address is working fine. If I send email from another address it's working perfect, but I think there is a problem with prestashop. The version I use is 1.2.5.

Anybody please give me some help. Thanks in advance