I support Dragon & Ferdy, javascript method is one of the best.
but checking HTTP_Referer is not always good. For some good users it's sometimes disabled or maybe some proxy-servers don't add those to headers.
One of the thing what we have (if domino runs on windows server and using wsock32.dll) is reverse IP-check, if it's in blacklist ( bl.spamcop.net,dnsbl.sorbs.net etc.).
If found, then comment is saved but it get's one attribute in it (IsSpam=".Yes"). It's saved and showed with icon in view later, because some users have good comments but in their computer has some worm or virus.
I support Dragon & Ferdy, javascript method is one of the best.
but checking HTTP_Referer is not always good. For some good users it's sometimes disabled or maybe some proxy-servers don't add those to headers.
One of the thing what we have (if domino runs on windows server and using wsock32.dll) is reverse IP-check, if it's in blacklist ( bl.spamcop.net,dnsbl.sorbs.net etc.).
If found, then comment is saved but it get's one attribute in it (IsSpam=".Yes"). It's saved and showed with icon in view later, because some users have good comments but in their computer has some worm or virus.