Web to lead notification details not arriving - NetDev

Web to lead notification details not arriving - NetDev

Hi there, 

We no longer receive our lead details when a web lead notification form i completed. All we receive is the Zoho logo and a note to say a new lead was generated. 

Our contact us form on our website is also no longer sending out emails. 

Could you please shed some light on this? :) 

Laurence