Ikkeben, thx. (I'm Dutch by the way)
The strange thing is that at least 3 companies (with own mailservers) seem to have that problem now and cannot send emails to me.
Further my hosting company has reduced my "spam filter strength" and it seems to work now...
Strange for me
I am not an expert, but have a domain with emailserver (on directadmin).
Since last weekend some parties that send e-mails to me, got a message that that email connot be sent (so I don't receive any emails from their emailservers).
These are 2 of the messages e-mail senders receive when sending...