Top Sender List - Domains Not Mine or Served

==== Required information ====
- iRedMail version: 1.6.0
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Linux/BSD distribution name and version: Ubuntu 12.04.04 LTS
====

Hello,

I'm looking at my Top Sender list and see senders who are not domains I'm handing email for.  Click on the email in the Top 20 Senders list and receive error.  Drilling down in the amavisd db msgs table to try and make sense of this.  Anybody know why I'm seeing this?

Thank you

td