Kann mir jemand erklären warum diese E-Mails geblockt werden und nicht versannd werden:

@LIVE.DK>: host mx2.hotmail.com[65.55.37.88] said: 550 SC-002

    (COL004-MC2F55) Unfortunately, messages from 194.25.134.22 weren't sent.

    Please contact your Internet service provider since part of their network

    is on our block list. 

@hotmail.com>: host mx3.hotmail.com[65.54.188.126] said: 550

    SC-002 (BAY004-MC4F1) Unfortunately, messages from 194.25.134.19 weren't

    sent. Please contact your Internet service provider since part of their

    network is on our block list.

[ Beitrag aus Gründen des Datenschutzes von @pamperlapescu bearbeitet.]