Emails through contact form never arrives!

Hi,
I just realized that the email sent by the page through the contact form never arrives to my email account. I've check the junk folders as well, but no success.
I'm using captcha now as a security feature since I've received lots of spams in the past through this page.
Can you tell me which settings I should check?
Thanks.

I would suggest to start with verifying if php "mail" function works fine on your server. You can check that by contacting your hosting company support. Perhaps they did some security changes and mail function is not available anymore.