bounced emails from people outside of my mailing list

bounced emails from people outside of my mailing list

I'm sending out my campaigns and receive some bouncing messages handled by Zoho Campaigns. The contacts in Zoho Campaigns are only created by synching with Zoho CRM. The problem: in Zoho Campaigns bouncing list I see emails that are not from the mailing list in Zoho Campaigns and not from Zoho CRM.

Example:

Campaign: SSCE hint feed 03
Bounced email: general@mollanka.lk

The email address general@mollanka.lk is not in CRM and not in Campaigns. The details from this bouncing email are like this:

Date: Wed, 16 Apr 2014 15:38:59 -0700 (PDT)
From: "Evgeny Drokov" <ed@arl-consulting.com>
Reply-To: ed@arl-consulting.com
To: "Mitsui OSK Lines Lanka (Pvt) Ltd" <general@mollanka.lk>
Message-ID: <zcb.11287eca410250.165c1bf4baf5ff0.1397687939383@zcsend.net>
Subject: The Cloud Sea Side Crane Executor: Easy Container Search and Moves
 Confirmation

The question: how come the email had been sent to general@mollanka.lk whereas it doesn't exist anywhere?

Evgeny Drokov