Since we from time to feedback received, the example, the name "DDoS" is wrong at a single IP address, here a short explanation why the name is correct:
In a single domain or IP address access to many different IP addresses (DDoS). These are with Fail2Ban on certain characteristics such as certain user agent (Firefox 1.x, 2.x) or certain URL Views: domain.tld / File-there nicht.txt determined and locked.
These are then over (default) reportet 4 Views of us.
For the recipient of the reports of view, it looks like a DOS (since only an IP has been reported). From the perspective of the affected server, it is of course a DDOS.
Recipient of a ApacheDDOS -Report: please checks the clients, as they infected with a Trojan horse and are part of a botnet.
These are IP addresses which create honeypot forums, wikis or honeypot honeypot domains with guestbooks or comment feature items which other URL's (buy Viagra ....) Bespammen.
Here a lot of comments to be made manually via VPN service.
And yes, a comment on a blog with eg:
[url=http://www.tramadol2011.co.cc]morphine tramadol dosage equivalent[/url]
Is as bad as SPAM!
These are major messages by already multiple 5xx messages.
When a mail server hard errors such as the following does not understand this is misconfigured or a bot:
Mar 13 10:14:03 server5 postfix/smtpd: NOQUEUE: reject: RCPT from unknown[220.127.116.11]: 554 5.7.1 Service unavailable; Client host [18.104.22.168] blocked using xbl.spamhaus.org; http://www.spamhaus.org/query/bl?ip=22.214.171.124; from=<anwalttzv @gmx.de> to=<email@example.com> proto=SMTP helo=<gmx.de>
And even if this means accepting the spam mail has been stopped, the PC / server is still infected and sends to another server that does not spamhaus.org uses a spam mail!
On pages written in H2 that all registrations and postings reported. Most IP addresses are also on http://stopforumspam.com listed and will pass on to SFS.