Problem with automatic reply (Out of Office) which doesn't recognize outside address

Hi everyone,

I have a problem with my Exchange 2013 server and automatic replies. 

I explain :

The OoO send everytime the inside automatic replies.

When I send an email from my personal email address (outside org), I received the internal reply. It's the same behaviour when it was a client.

Does someone already has this problem and know the solution ?

It is an Exchange 2013 Sp1 server. No cluster, no load balancing, only one mail server.

Thanks for your help