I have a dedicated server which runs centos. Today i got an email from loginwatch on my server with hundreds of lines of 'errors'. I don't really know what they are becasue i am fairly new at this.

The lines are in a few sections, I will display the first 10 of all of them, i hope someone can help me fix these problems.

 --------------------- Named Begin ------------------------


 **Unmatched Entries**
    client 216.146.46.136 notify question section contains no SOA: 8 Time(s)
    client 92.114.98.10 query (cache) 'adobe.com/A/IN' denied: 4 Time(s)
    network unreachable resolving '11.254.75.75.in-addr.arpa/PTR/IN': 2001:7fd::1#53: 1 Time(s)
    network unreachable resolving '136.176.97.93.in-addr.arpa/PTR/IN': 2001:13c7:7002:3000::11#53: 1 Time(s)
    network unreachable resolving '136.176.97.93.in-addr.arpa/PTR/IN': 2001:500:13::c7d4:35#53: 1 Time(s)
    network unreachable resolving '136.176.97.93.in-addr.arpa/PTR/IN': 2001:500:2e::1#53: 2 Time(s)
    network unreachable resolving '136.176.97.93.in-addr.arpa/PTR/IN': 2001:610:240:0:53::193#53: 1 Time(s)
    network unreachable resolving '136.176.97.93.in-addr.arpa/PTR/IN': 2001:610:240:0:53::3#53: 1 Time(s)
    network unreachable resolving '136.176.97.93.in-addr.arpa/PTR/IN': 2001:660:3006:1::1:1#53: 1 Time(s)
    network unreachable resolving '136.176.97.93.in-addr.arpa/PTR/IN': 2001:6b0:7::2#53: 1 Time(s)
    network unreachable resolving '136.176.97.93.in-addr.arpa/PTR/IN': 2001:dc0:1:0:4777::140#53: 1 Time(s)
    network unreachable resolving '136.176.97.93.in-addr.arpa/PTR/IN': 2001:dc0:2001:a:4608::59#53: 1 Time(s)
    network unreachable resolving '146.250.19.67.in-addr.arpa/PTR/IN': 2001:5a0:10::2#53: 1 Time(s)
    network unreachable resolving '149.207.106.87.in-addr.arpa/PTR/IN': 2001:7fd::1#53: 1 Time(s)
    network unreachable resolving '178.62.24.195.in-addr.arpa/PTR/IN': 2001:7fd::1#53: 1 Time(s)

this goes on for hundreds of lines with all different domain names.

--------------------- pam_unix Begin ------------------------

Failed logins from:
    78.86.126.211 (78-86-126-211.zone2.bethere.co.uk): 111 times
    93.97.176.136 (93-97-176-136.dsl.cnl.uk.net): 113 times
    121.14.145.32: 136 times
    190.152.69.5: 248 times
    209.160.72.15: 572 times
    210.26.48.35: 2 times
    212.235.111.224 (DSL212-235-111-224.bb.netvision.net.il): 140 times
    218.206.25.29: 140 times

 Illegal users from:
    78.86.126.211 (78-86-126-211.zone2.bethere.co.uk): 2665 times
    93.97.176.136 (93-97-176-136.dsl.cnl.uk.net): 2539 times
    121.14.145.32: 116 times
    190.152.69.5: 34 times
    209.160.72.15: 324 times
    218.206.25.29: 8051 times

 proftpd:
    Unknown Entries:
       session opened for user cent_ftp by (uid=0): 15 Time(s)
       session closed for user cent_ftp: 14 Time(s)

 sshd:
    Authentication Failures:
       unknown (218.206.25.29): 8051 Time(s)
       unknown (78-86-126-211.zone2.bethere.co.uk): 2665 Time(s)
       unknown (93.97.176.136): 2539 Time(s)
       root (209.160.72.15): 558 Time(s)
       unknown (209.160.72.15): 324 Time(s)
       root (190.152.69.5): 246 Time(s)
       unknown (121.14.145.32): 116 Time(s)
       root (121.14.145.32): 106 Time(s)
       root (dsl212-235-111-224.bb.netvision.net.il): 70 Time(s)
       root (93.97.176.136): 44 Time(s)
       root (78-86-126-211.zone2.bethere.co.uk): 37 Time(s)
       unknown (190.152.69.5): 34 Time(s)
       mysql (121.14.145.32): 30 Time(s)
       nobody (218.206.25.29): 26 Time(s)
       mail (218.206.25.29): 24 Time(s)
       news (218.206.25.29): 24 Time(s)
       root (218.206.25.29): 24 Time(s)


--------------------- SSHD Begin ------------------------

 **Unmatched Entries**
 pam_succeed_if(sshd:auth): error retrieving information about user tavi : 2 time(s)
 pam_succeed_if(sshd:auth): error retrieving information about user pam : 2 time(s)
 pam_succeed_if(sshd:auth): error retrieving information about user konchog : 1 time(s)
 pam_succeed_if(sshd:auth): error retrieving information about user stavrum : 2 time(s)
 pam_succeed_if(sshd:auth): error retrieving information about user rachel : 1 time(s)
 pam_succeed_if(sshd:auth): error retrieving information about user affiliates : 24 time(s)
 pam_succeed_if(sshd:auth): error retrieving information about user nen : 1 time(s)
 pam_succeed_if(sshd:auth): error retrieving information about user cobra : 1 time(s)
 pam_succeed_if(sshd:auth): error retrieving information about user pass : 7 time(s)
 pam_succeed_if(sshd:auth): error retrieving information about user hacer : 1 time(s)
 pam_succeed_if(sshd:auth): error retrieving information about user chung : 1 time(s)
 pam_succeed_if(sshd:auth): error retrieving information about user zainee : 1 time(s)
 pam_succeed_if(sshd:auth): error retrieving information about user radu : 2 time(s)
 pam_succeed_if(sshd:auth): error retrieving information about user alka : 4 time(s)
 pam_succeed_if(sshd:auth): error retrieving information about user albert : 5 time(s)
 pam_succeed_if(sshd:auth): error retrieving information about user turcia : 2 time(s)
 pam_succeed_if(sshd:auth): error retrieving information about user cordell : 2 time(s)
 pam_succeed_if(sshd:auth): error retrieving information about user silver : 2 time(s)
 pam_succeed_if(sshd:auth): error retrieving information about user dragon : 3 time(s)

If someone wants to see the whole log i can upload it somewhere. Am i being hacked, what is this all??

I hope someone can help me, this does not look good at all.