Block Images From An Outside Domain?

Hi,
Spammers are hitting a couple of forums I administer and I'd like to at least block the images that they're putting in the posts (the forums are PHPBBs and the spammers are using BBCode to place the remote images). Is there a way to block images from another server using htaccess? I'd need to do it using the domain names rather than IPs which probably change.
It's kind of the opposite of blocking hotlinking so it seems like it should be possible but I've been unable to find info.
Thanks!
Albo

You would have to block that using phpbb. They are just linking to an image, so you have to disallow linking to an image thats not on your site.

Thanks. I haven't been able to find any way to do that within PHPBB or any of the mods I've added, and extensive searching at phpbb.com hasn't turned up anything helpful. Any suggestions as to where that info might be found would be greatly appreciated!
Albo

Ok so a quick hack I just tested..

This code allows images that start with http://www.htaccesselite.com and deletes all others.

To use it, edit the file viewtopic.php and search for

and then paste the following directly under it.


Your welcome, I hate spammers too :)

Damn - that's great! I just stuck it in there and it works like a charm. I'm going to post it to the "Requests for Mods" board on phpbb.com and see if some one wants to make a quick little official mod from it - maybe with a control panel in the admin area and the ability to allow images from specific outside sites.
You're a hero, buddy - thanks!
Albo