connecting jetpack

I have installed jetpack on my wordpress but cannot connect it.

Strangely enough, I received an email from Jetpack saying my site
was down for 20 min….I don’t understand if I cannot connect Jetpack, why then am I getting an email saying my site has been down?

here is the header of the email, is it from jetpack?

Delivered-To: [email protected]
Received: from localhost (HELO queue) (127.0.0.1)
by localhost with SMTP; 5 Apr 2017 14:00:00 +0200
Received: from output5.mail.xxxx.net (164.132.34.5)
by mail.xxxx.net with AES256-GCM-SHA384 encrypted SMTP; 5 Apr 2017 14:00:00 +0200
Received: from vr4.mail.xxx.net (unknown [10.101.8.4])
by out5.mail.xxx.net (Postfix) with ESMTP id 6BAA22EE9E7
for <xxxxxx@xxxxxxxxxxorg>; Wed, 5 Apr 2017 14:00:00 +0200 (CEST)
Received: from in105.cloud.mail.xxx.net (unknown [10.101.4.105])
by vr4.mail.xxx.net (Postfix) with ESMTP id 5C3B11B00056
for <[email protected]>; Wed, 5 Apr 2017 14:00:00 +0200 (CEST)