I seems our JIRA has been targeted for SPAM due to its "public" mode...
The https://jira.netic.dk/secure/Signup!default.jspaurl is redirected before the request getting to jira and I can see that no mail is comming in.
Anyway, the attacker creates several accounts a day, costing us 1 license each (unless I de-activate) the user. Going into private mode is not really an option.
Is there a way to disable/secure public signup and let it be allowed by mail only?