UBB.threads PHP Forum Software Community Forums UBB.threads 6 Version 6 Support reply errors

From someone using our forum, and ideas onthis?
Thanks!
JB

I keep getting the following error message when I try to reply in the forums:
The host you are trying to send the input from is not a valid host.

I have no problem starting a new thread. Only problem is when I reply.

Do you enable the referer check in your control panel? If yes, try to disable it.

Thanks Zarzal - I had a url for the referrer check in place. Have now checked the 'disable http check' box......
What's the function of these anyway?
Thanks!
JB

"Hi there: The purpose of the referrer check is mainly to check the legitimacy of the poster, and protect your board from spamming bots, etc. There's no security threat, per se, in disabling it, but I'm not sure about what you could have users do to troubleshoot the problem on their firewalls... Let me see if I can gain some insight on that for you!"

https://www.ubbcentral.com/boards/showfla...=true#Post40343

Thanks Zarzak - her reply was from 2004 and it appears she never got back to the forum with further 'insight' to the issue. Since it's one guy (so far), I'm going to reactvate the checker and tell him he needs to adjust his firewall........
Cheers
JB