AEM AS Cloud Service integration with Splunk

Hi Team,

Trying to forward AEM logs from AEM Splunk to our own Splunk with below code 

.config

   dev

       LogForwarding.yaml 

The below code failing in pipeline job 

Error in config kind 'LogForwarding': credentials audit job failed for splunk: Error: splunk audit failed: while posting on server: Post "splunk.com:8088/services/collector/event": dial tcp: lookup splunk.com on  no such host | [credential audit failed] |

kind: "LogForwarding"
version: "1"
metadata:
envTypes: ["dev"]
data:
splunk:
default:
enabled: true
host: "splunk.com"
port: "8088"
token: "${{SPLUNK_TOKEN}}"
index: "aem_index"
sourcetype:
- aemaccess
- aemerror
- aemrequest
- aemdispatcher
- aemhttpdaccess
- aemhttpderror
- aemcdn
event:
level: "INFO1"
msg: "[FelixLogListener] Test SPLUNK"
aem_program_id: 1111
aem_tier: author
aem_env_id: 11111
splunk_customer: "true"
aem_env_type: "dev"  

Kindly suggest .

How frequent logs will be forward to my own Splunk(its real time or some cron job)