I tried to block some well-known spam senders and was surprised, that still spam goes through.
After investigating I noticed, that E-Mail Protection -> SMTP -> Antispam -> "Blacklisted Address Patterns" only blocks the ENVELOPE sender.
Why the heck is there no field to block the domains (or hosts/networks) of sending servers themselves?
The effect now is that I know their domains (in this case it's well known (google for it) kjm2.de) but I didn't find the proper fields for it. Google also didn't help for that.
Is there any other solution than making the firewall rules messy?
Thanks in advance! (German answers are fine, I just guess it's a minority here)
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