I was reading the full stuff. So let's begin.
MultiRBL.valli.org says 3 blacklisted out of 224.(Everything depends on the mail-server and it's IP(85.25.107.124), not the website.)
Those who blacklisted are dnsblchile.org, RFC-Clueless and Quorum.to. Let's take a look at the reasons for the blacklist-status.
dnsblchile.org tells us "is listed under category 127.0.0.14"
dnsblchile.org also tells us that category 127.0.0.14 means:
Category 127.0.0.14 of DNSBL Chile include IP addresses that are currently sending spam or IP addresses that do not comply with RFC standards defined for the Simple Mail Transfer Protocol (SMTP).
So it says that it also could be an "IP addresses that do not comply with RFC standards defined for the Simple Mail Transfer Protocol".
Sure, because the mail-server is offline/not responding and maybe that's also the reason why he is offline now. For repair?
Quorum.to shows status green and tells us that
85.25.107.124 not in database
and
Quorum.to is not listing this host. Perhaps a different IP address is at issue, or mail is being blocked by a system other than quorum.to.
"...is not listing this host" and "blocked by a system other than quorum.to". Perhaps by the other both i mentioned on the top(dnsblchile.org and RFC-Clueless.
RFC-Clueless tells us something different on their own website than on MultiRBL.valli.org.
It says
85.25.107.124 is NOT listed in RFC2 RBL. We have no recorded history apropos of 85.25.107.124.
This means that only dnsblchile.org blacklisted, because of a not responding mail-server or maybe it has responded something crazy in SMTP, because of it's mailfunction.
RFC-Clueless and Quorum.to are saying it's ok.
zulu.zscaler we already had and it tells us ok. The 3 risky ones you mean have a tooltip you should read. It says "This check increased the overall risk score".
It
increased
the score but it's still not enough to score the website as bad or blocked.
Quttera has something blacklisted. But not sysprofile.de just the domain/host imageshack.com. The blacklisted 22 external links are also from imageshack.com.
Like i told you before this could be images posted by users in the forum. That's all.
All in all sysprofile.de is not blacklisted. Only the mail-server has ONE blacklist-entry and this one is more a mistake than a reason.