<html> <head> <style></style> </head> <body class='hmmessage'><div dir='ltr'> We have been running a check_http to our website and just today it started alerting. I fixed it but was looking for an explanation of why it failed. The check was check_http -L www.somesite.com -c 30 -w 15, which was running with no problem. Today we switched over content to Akamai and as soon as we did, this check starting alerting a warning as follows : <A HREF="http://www.somesite.com:80/" target="_blank">HTTP WARNING: HTTP/1.0 400 Bad Request - 402 bytes in 0.061 second response time </A>|time=0.061278s;15.000 000;30.000000;0.000000 size=402B;;;0 I switched the check to the following check_http -H www.somesite.com -c 30 -w 15 and everything went back to green HTTP OK: HTTP/1.1 200 OK - 40004 bytes in 0.247 second response time |time=0.246 539s;15.000000;30.000000;0.000000 size=40004B;;;0 I know from the documentation that the -L means Wrap output in HTML link (obsoleted by urlize) not sure exactly what that means. If memory servers me correct, way back when I set this check up, the -H didn't work but the -L did. Can someone school me on the details of what happened? Thanks, Steve </div></body> </html>