Some days ago, I noticed that a large number of 'This URL is unreachable' messages was produced.
So, I inserted a logging script to see what happen.
I found that this error occured when users set cron jobs with URL contains .comxa.com, .netne.net, .netau.net, .netii.net, .host22.com, etc. All of them is owned by 000webhost.com users with free account.
The problem, maybe, after a long time thinking and trying to fix, is 000webhost.com banned SetCronJob's IP / service:
- Can't ping their subdomain, e.g subsmith.comxa.com
- Can't lynx their website, e.g http://subsmith.comxa.com/
- Can't open their web site (using phpproxy).
This banned decision may be caused by SetCronJob opened too many connection to 000webhost.com users' website (too many users set cron jobs with web site hosted at 000webhost.com), and their firewall banned SetCronJob's IP (similar firewall is DDOS Deflate).
It's a pity that 000webhost.com users can no longer use my service, but, if this is their decision, I can do nothing.
Sorry all 000webhost.com users :(
UPDATED: Look like CBA.pl banned SetCronJob, too :(