what does this sendmail message in Logwatch showing? hacking?

[M E Fieu]

Hi. Can you help me to take a look what is mean by the following sendmail message in Logwatch
showing??  how the sendmail show this message??  how do they key in chenkai1`ms64.hinet.net ?  And
also what is the forwarding error message??  I don't have /root/.forward file at all.  

Forwarding errors:
    /root/.forward.localhost: Group writable directory: 1 Times(s)
    /root/.forward: Group writable directory: 1 Times(s)


From: root [mailto:root at localhost.localdomain] 
Sent: Tuesday, June 06, 2006 4:02 AM
To: root at localhost.localdomain;
Subject: LogWatch for ssl1


 ################### LogWatch 4.3.2 (02/18/03) #################### 
       Processing Initiated: Tue Jun  6 04:02:01 2006
       Date Range Processed: yesterday
     Detail Level of Output: 0
          Logfiles for Host: ssl1
 ################################################################ 

 --------------------- sendmail Begin ------------------------ 

Unknown users:

    chenkai1`ms64.hinet.net
      from SSL1 [127.0.0.1]    1 time(s).

 
Forwarding errors:
    /root/.forward.localhost: Group writable directory: 1 Times(s)
    /root/.forward: Group writable directory: 1 Times(s)


################### LogWatch 4.3.2 (02/18/03) #################### 
       Processing Initiated: Tue Jun  6 04:02:01 2006
       Date Range Processed: yesterday
     Detail Level of Output: 0
          Logfiles for Host: www3
 ################################################################ 

 --------------------- sendmail Begin ------------------------ 

Unknown users:

    believeworld0303
      from localhost.localdomain [127.0.0.1]    2 time(s).

    lichungchung
      from localhost.localdomain [127.0.0.1]    1 time(s).




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