server not found problem

[TheMask]

# curl -I http://flexkomkobi.com
curl: (6) Couldn't resolve host 'flexkomkobi.com'

i take this error now.
when server load high to 7.00

[TheMask]

lol but i know my dns working well
but webserver dont answer when load 7.0+

[webizen]

It is your DNS issue. When server (host webserer and DNS) load is high, DNS fails to respond! This is NOT an LSWS issue.

[root@test ~]# dig flexkomkobi.com

; <<>> DiG 9.3.6-P1-RedHat-9.3.6-4.P1.el5_5.3 <<>> flexkomkobi.com
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 10740
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;flexkomkobi.com. IN A

;; Query time: 2336 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Thu Apr 12 12:35:13 2012
;; MSG SIZE rcvd: 33

[root@test ~]#

flexkomkobi.com. 100 IN A 85.95.248.132
flexkomkobi.com. 100 IN NS ns2.wm0.org.
flexkomkobi.com. 100 IN NS ns1.wm0.org.

You should move NS to a different server to avoid this.