when user send email to salesforce using email to case functionality it should create new case. But for certain usres its not creating case in salesforce. For example When user send mail to email@example.com (Email to case setup is configured for this address) email address from there @sfr.fr e-mail addresses not coming to salesforce. But the user was able to create case long back. Is there any restriction is there here for email address ? Can you please tell me why case is not creating when email coming from this email address ?