Any of these are needed or torojan virus?

On linux RH9 server, I see this if do top command:

Code: 
  PID USER     PRI  NI  SIZE  RSS SHARE STAT %CPU %MEM   TIME CPU COMMAND
24665 root      12   0  1132 1132   824 R     0.5  0.1   0:01   0 top
    1 root      13   6   508  508   456 S N   0.0  0.0   0:04   1 init
    2 root      12   6     0    0     0 SWN   0.0  0.0   0:00   0 keventd
    3 root      19  19     0    0     0 SWN   0.0  0.0   0:02   0 ksoftirqd_CPU0
    4 root      18  19     0    0     0 SWN   0.0  0.0   0:00   1 ksoftirqd_CPU1
    5 root      12   6     0    0     0 SWN   0.0  0.0   0:00   1 kswapd
    6 root      12   6     0    0     0 SWN   0.0  0.0   0:00   0 bdflush
    7 root      13   6     0    0     0 SWN   0.0  0.0   0:02   0 kupdated
    8 root      13   6     0    0     0 SWN   0.0  0.0   0:02   0 kjournald
  601 root      12   6     0    0     0 SWN   0.0  0.0   0:00   0 kjournald
  602 root      13   6     0    0     0 SWN   0.0  0.0   0:00   1 kjournald
  980 root      13   6   576  576   496 S N   0.0  0.0   0:00   1 syslogd
  984 root      13   6   464  464   408 S N   0.0  0.0   0:00   0 klogd
  993 root      11   4  1940 1940  1636 S N   0.0  0.1  12:33   1 httpd
 1076 root      12   6  3476 3472  2216 S N   0.0  0.3   0:00   1 snmpd
 1086 named     12   6  2864 2860  2144 S N   0.0  0.2   0:00   1 named
 1100 root      11   4  1532 1532  1396 S N   0.0  0.1   0:00   1 sshd
 1113 root      10   4   824  824   708 S N   0.0  0.0   0:00   0 xinetd
 1130 root      13   6  2580 2580  1916 S N   0.0  0.2   0:01   1 sendmail
 1138 smmsp     13   6  2312 2304  1772 S N   0.0  0.2   0:00   0 sendmail
 1148 root      12   8 15352  14M  2372 S N   0.0  1.4   0:00   0 spamd
 1166 root      13   6   608  608   536 S N   0.0  0.0   0:00   0 crond
 1200 root      12   6  1168 1168   996 S N   0.0  0.1   0:00   1 mysqld_safe
 1272 daemon    13   6   556  556   492 S N   0.0  0.0   0:00   0 atd
 1288 mysql     13   6 30304  29M  2212 S N   0.0  2.9   1:04   1 mysqld
 1297 root      13   8  4284 4280  1840 S N   0.0  0.4   0:00   0 miniserv.pl
 1305 root      13   8  5016 5012  1976 S N   0.0  0.4   0:00   0 miniserv.pl
 1308 root      12   8   420  420   368 S N   0.0  0.0   0:00   0 mingetty
 1309 root      12   8   420  420   368 S N   0.0  0.0   0:00   0 mingetty
 1310 root      12   8   420  420   368 S N   0.0  0.0   0:00   1 mingetty
 1311 root      12   8   420  420   368 S N   0.0  0.0   0:00   1 mingetty
 1312 root      12   8   420  420   368 S N   0.0  0.0   0:00   1 mingetty
 1313 root      12   8   420  420   368 S N   0.0  0.0   0:00   0 mingetty
24625 root       9   0  1436 1436  1092 S     0.0  0.1   0:00   0 bash
Q:1. All of these are needed to run?
Q:2. why two sendmail program running with two user, ie. root and smmsp ?
Q:3. How can I turn off/remove any of this application if they are not needed? or it is a torojan virus?

Thanks

 

 

 

 

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