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[Solved] Temporarily closed signups because of spam signups (lemmy.world)

submitted 1 year ago* (last edited 1 year ago) by [email protected] to c/[email protected]

65 comments fedilink hide all child comments

So some spam signups just happened (all [email protected] format e-mail) This caused bounced mail to increase, causing Mailgun to block our domain to prevent it getting blacklisted.

So:

Mail temporarily doesn't work
I closed signups for now
I will ban the spam accounts
I will check how to prevent (maybe approval required again?)

Stay tuned.

Edit: so apparently there is a captcha option which I now enabled. Let's see if this prevents spam. Registrations open again.

Edit2 : Hmm Mailgun isn't that fast in unblocking the domain. Closing signups again because validation mails aren't sent

Edit 3: I convinced Mailgun to lift the block. Signups open again.

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[–] [email protected] 4 points 1 year ago (6 children)

I solved this problem once. What you do is have a custom captcha that you code yourself. It can be as simple as "What is 2+3?" and have 10-20 questions that you rotate between. Most spammers will be too lazy to update their spambot.

[–] [email protected] 2 points 1 year ago (1 children)

Don't just include it as text though. Rather, present the question as text in a picture.

[–] [email protected] 1 points 1 year ago (1 children)

This is very effective but also blocks people who spend on screen readers

[–] [email protected] 1 points 1 year ago

The solution there is to provide a voice over of the captcha.

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