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API accessed using DNS hostname stops responding

[root@XXXXXXXXXXXXXXX01 ~]# cat /etc/haproxy/haproxy.cfg
global
log /dev/log local0 info
log /dev/log local1 notice

defaults
log global
option dontlognull
timeout connect 10000
timeout client 45000
timeout server 24000
maxconn 50000

frontend firstpoint
mode tcp
bind XX.XXX.2.127:54321 transparent
option tcplog
timeout connect 100000
timeout client 50000
timeout server 50000
default_backend trackwizz

backend trackwizz
mode tcp

balance roundrobin

    balance leastconn
    option forwardfor
    timeout server 30000
    timeout connect 40000
    appsession ASP.Net_SessionID len 24 timeout 30m request-learn prefix
    server server1 XX.XXX.0.41:54321 check weight 1 fall 2 inter 1s rise 2
    server server2 XX.XXX.0.36:54321 check backup weight 1 fall 2 inter 1s rise 2

frontend secondpoint
mode tcp
bind XX.XXX.2.127:8011 transparent
option tcplog
timeout connect 100000
timeout client 50000
timeout server 50000
default_backend trackwizz_2

backend trackwizz_2
balance leastconn
option forwardfor
timeout server 30000
timeout connect 40000
server server1 XX.XXX.0.41:8011 check weight 1 fall 2 inter 1s rise 2
server server2 XX.XXX.0.36:8011 check weight 1 fall 2 inter 1s rise 2

frontend thirdpoint
mode tcp
bind XX.XXX.2.127:54322
option tcplog
timeout connect 100000
timeout client 50000
timeout server 50000
default_backend trackwizz_3

backend trackwizz_3
balance leastconn
option forwardfor
timeout server 30000
timeout connect 40000
server server1 XX.XXX.0.41:54322 check weight 1 fall 2 inter 1s rise 2
server server2 XX.XXX.0.36:54322 check weight 1 fall 2 inter 1s rise 2

frontend fourthpoint
mode tcp
bind XX.XXX.2.127:54323
option tcplog
timeout connect 100000
timeout client 50000
timeout server 50000
default_backend trackwizz_4

backend trackwizz_4
balance leastconn
option forwardfor
timeout server 30000
timeout connect 40000
server server1 XX.XXX.0.41:54323 check weight 1 fall 2 inter 1s rise 2
server server2 XX.XXX.0.36:54323 check weight 1 fall 2 inter 1s rise 2

listen status XX.XXX.2.144:8888
mode http
stats enable
stats uri /hastatus
stats auth admin:12345678
[root@XXXXXXXXXXXXXXX ~]#