logchek en Debian Sarge

[claudiovega]

Hola, tengo instalado un servidor con Debian Sarge con logcheck (una aplicación que te hace llegar los log a tu correo), y me ha llegado un mensaje que no se de que se trata, osea tengo una idea, pero no mucho mas, este:

Código:

System Events
=-=-=-=-=-=-=
May  9 22:01:40 SGMCamanchaca rpc.statd[2381]: gethostbyname error for ^X÷ÿ¿^X÷ÿ¿^Z÷ÿ¿^Z÷ÿ¿%8x%8x%8x%8x%8x%8x%8x%8x%8x%62716x%hn%51859x%hn\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220

Además, es normal que diariamente me lleguen estos mensajes:

Código:

Security Events
=-=-=-=-=-=-=-=
May  4 12:11:19 SGMCamanchaca sshd[4212]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:11:28 SGMCamanchaca sshd[4214]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:11:32 SGMCamanchaca sshd[4216]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:11:35 SGMCamanchaca sshd[4218]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:11:38 SGMCamanchaca sshd[4220]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:11:44 SGMCamanchaca sshd[4222]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:11:49 SGMCamanchaca sshd[4224]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:11:53 SGMCamanchaca sshd[4226]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:11:58 SGMCamanchaca sshd[4228]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:12:12 SGMCamanchaca sshd[4230]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:12:16 SGMCamanchaca sshd[4232]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:12:19 SGMCamanchaca sshd[4234]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:12:24 SGMCamanchaca sshd[4236]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:12:30 SGMCamanchaca sshd[4238]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:12:38 SGMCamanchaca sshd[4240]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:12:39 SGMCamanchaca sshd[4242]: Illegal user admin from ::ffff:66.40.22.165
May  4 12:12:40 SGMCamanchaca sshd[4242]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:12:42 SGMCamanchaca sshd[4244]: Illegal user admin from ::ffff:66.40.22.165
May  4 12:12:43 SGMCamanchaca sshd[4244]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:12:49 SGMCamanchaca sshd[4246]: Illegal user admin from ::ffff:66.40.22.165
May  4 12:12:50 SGMCamanchaca sshd[4246]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:12:53 SGMCamanchaca sshd[4248]: Illegal user admin from ::ffff:66.40.22.165
May  4 12:12:54 SGMCamanchaca sshd[4248]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:12:58 SGMCamanchaca sshd[4252]: Illegal user admin from ::ffff:66.40.22.165
May  4 12:12:59 SGMCamanchaca sshd[4252]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:13:02 SGMCamanchaca sshd[4257]: Illegal user admin from ::ffff:66.40.22.165
May  4 12:13:06 SGMCamanchaca sshd[4260]: Illegal user admin from ::ffff:66.40.22.165
May  4 12:13:07 SGMCamanchaca sshd[4260]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:13:07 SGMCamanchaca sshd[4257]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:13:09 SGMCamanchaca sshd[4262]: Illegal user admin from ::ffff:66.40.22.165
May  4 12:13:09 SGMCamanchaca sshd[4262]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:13:11 SGMCamanchaca sshd[4264]: Illegal user admin from ::ffff:66.40.22.165
May  4 12:13:12 SGMCamanchaca sshd[4264]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:13:13 SGMCamanchaca sshd[4266]: Illegal user admin from ::ffff:66.40.22.165
May  4 12:13:13 SGMCamanchaca sshd[4266]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:13:19 SGMCamanchaca sshd[4268]: Illegal user admin from ::ffff:66.40.22.165
May  4 12:13:20 SGMCamanchaca sshd[4268]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:13:24 SGMCamanchaca sshd[4270]: Illegal user admin from ::ffff:66.40.22.165
May  4 12:13:25 SGMCamanchaca sshd[4270]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:13:27 SGMCamanchaca sshd[4272]: Illegal user admin from ::ffff:66.40.22.165
May  4 12:13:27 SGMCamanchaca sshd[4272]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:13:31 SGMCamanchaca sshd[4274]: Illegal user admin from ::ffff:66.40.22.165
May  4 12:13:31 SGMCamanchaca sshd[4274]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:13:36 SGMCamanchaca sshd[4276]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:13:39 SGMCamanchaca sshd[4278]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:13:52 SGMCamanchaca sshd[4282]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:13:53 SGMCamanchaca sshd[4280]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:14:00 SGMCamanchaca sshd[4285]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:14:03 SGMCamanchaca sshd[4287]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:14:05 SGMCamanchaca sshd[4289]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:14:08 SGMCamanchaca sshd[4292]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:14:11 SGMCamanchaca sshd[4295]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:14:16 SGMCamanchaca sshd[4297]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!
May  4 12:14:26 SGMCamanchaca sshd[4299]: reverse mapping checking getaddrinfo for host165.maxim.net failed - POSSIBLE BREAKIN ATTEMPT!

Debo preocuparme por algo en particular?