Mail statistics - unrecongnized host destination?

[trevorgehman]

Here is what my mail statistics show, and I'm worried about one particular entry:

Top 50 sending hosts by message count
-------------------------------------

10194 63MB local
7524 8707KB smtphk2.lvmh-group.com
548 18MB zod.pns.networktel.net
129 3799KB tw4.telgua.com.gt
110 1732KB tw3.telgua.com.gt
109 4450KB tw1.telgua.com.gt


Top 50 local senders by message count
-------------------------------------

9984 42MB mailnull
101 17MB gme
50 4634KB crawley
30 364KB trevorg


Top 50 host destinations by message count
-----------------------------------------

6934 14MB smtphk2.lvmh-group.com
3257 180MB local
513 1050KB mx1.lvmh-group.com
397 16MB mail.gmeoffice.org
81 1414KB gmail-smtp-in.l.google.com
16 33KB smtphk3.lvmh-group.com




Can anyone explain what exactly these stats are telling me? Does it mean that I am getting a lot of mail FROM lvmh-group.com and SENDING a lot of mail to lvmh-group.com through mailnull?

I'm having a hard time understanding these statistics. Sorry for being such a noob but the sheer volume of mail disturbs me.

 

[nickp666]

its saying that host has sent your domains 7524 messages

 

[trevorgehman]

What about the Top 50 host destinations...?

What does that mean?

 

[nickp666]

exactly as the title says, the top 50 servers your server has relayed mail to, i would assume seeing as the box that appears in top senders is showing in destinations that it is bounces going back