what does this error mean

hello
i checked my /var/log files and it showed this.can somone please tell me what it means.one programmer told me that my server is being hacked.please guide

Sep 15 05:58:02 ns named[25297]: client 203.217.0.253#5530: updating zone 'FLASHI.COM/IN': update failed: 'RRset exists (value dependent)' prerequisite not satisfied (NXRRSET)
Sep 15 05:58:03 ns named[25297]: client 203.217.0.253#5533: update 'FLASHI.COM/IN' denied
Sep 15 05:59:01 ns proftpd[20331]: ns.server.com (66.33.98.93[66.33.98.93]) - FTP session opened.
Sep 15 05:59:01 ns proftpd[20331]: ns.server.com (66.33.98.93[66.33.98.93]) - FTP session closed.
Sep 14 08:48:16 ns proftpd[10146]: ns.server.com (12.251.171.211[12.251.171.211]) - ftp: Directory ~ftp/ is not accessi$
Sep 14 08:48:16 ns proftpd[10146]: ns.server.com (12.251.171.211[12.251.171.211]) - FTP session closed.

Sep 14 10:33:15 ns proftpd[20464]: ns.server.com (195.117.82.40[195.117.82.40]) - FTP session opened.
Sep 14 10:33:15 ns proftpd[20464]: ns.server.com (195.117.82.40[195.117.82.40]) - no such user 'sliwek2'
Sep 14 10:33:16 ns last message repeated 4 times

 

 

 

 

Top