Hello
I am getting this warning and the sample data looks like this
02-22-2012 17:01:12.280 +0000 WARN DateParserVerbose - A possible timestamp match
(Wed Feb 22 17:01:12 2012) is outside of the acceptable time window. If this timestamp is correct, consider adjusting MAX_DAYS_AGO and MAX_DAYS_HENCE. Context="source::/var/opt/jira/log/atlassian-jira-security.log|host::syn|atlassian_jira|remoteport::47375"
Either you indeed have very strange data (from more than 10 years ago?) or you have badly onboarded sources and date is wrongly parsed.
Is there anything i can do to make the error go away?
Yes. Verify your sources and their config in Splunk. Without more information we can't tell you anything more than that.