my log files-is there any problem

[Ankush Grover]

hey friends,

 Here is my log file which is generated by Logwatch .

crond:
   Unknown Entries:
      session closed for user root: 313 Time(s)
      session opened for user root by (uid=0): 313 Time(s)


Relaying denied:
   From unknown[211.48.102.152] to support at microsoft.com : 1 Time(s)
   From unknown[222.101.92.32] to smtphunter44 at daum.net : 1 Time(s)


I am little concerned with these 2 means are these the normal entries
or there is some problem.As it can be seen that cron daemon opened for
root 313 times isn't it too much.

Please tell me about this.

Thanks & Regards

Ankush Grover