Thanks for the very quick reply, Pau. I have no idea what the first part of your answer meant ;) but I found the setting allowing me to turn on captcha for anon requests. I already had captcha enabled but missed these settings when I went through the config files.
For info setting up captchas requires getting keys from the two captcha websites (http://www.google.com/recaptcha and http://textcaptcha.com/), adding the keys to config-private.pl then switching 'support_submit_anon' to 1 in config.pl.
Edit: and I've just noticed textcaptcha is missing from config-local in the github repo file so here's the code for it if one needs it:
There's a bunch of configuration items that specify how a support category (gunk, comms, entries, etc.) will behave. One of them specifies whether requests in that category are visible to all users, or only to those on a per-category list. (That's what determines whether the category gets a * next to its name on the http://www.dreamwidth.org/support/submit dropdown.) The bit of SQL I gave you is to mark all categories (table supportcat) as not public. bin/ljdb is a utility that sets up things so that you can enter SQL for your database by hand without having to paste your database credential from your hack config files into the shell command line.
At the end of config-local.pl, uncomment the TEXTCAPTCHA demo api key. (It should read "api_key => 'demo'"). The demo key only gives a small subset of the possible questions, but it might be sufficient to prevent the spam.
At the end of config.pl, in the section labelled "Pages where we want to see captcha", make sure that "support_submit_anon" is set to 1.
In Defaults.pm, make sure that $DEFAULT_CAPTCHA_TYPE is set to "T".
If you find that the demo textcaptchas don't stop the spam, it's only a little bit of hassle to sign up for free for a real API key.
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For info setting up captchas requires getting keys from the two captcha websites (http://www.google.com/recaptcha and http://textcaptcha.com/), adding the keys to config-private.pl then switching 'support_submit_anon' to 1 in config.pl.
Edit: and I've just noticed textcaptcha is missing from config-local in the github repo file so here's the code for it if one needs it:
# setup textcaptcha
%TEXTCAPTCHA = (
api_key => $DW::PRIVATE::TEXTCAPTCHA{api_key},
);
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no subject
If you find that the demo textcaptchas don't stop the spam, it's only a little bit of hassle to sign up for free for a real API key.
HTH, and happy Christmas!