Symantec Brightmail problem!!

Hi Symantec forum

i have a problem with brightmail, when i send a simple test mail,

my IP ends in the brightmail blacklist, then i get it removed with the investigation form,

where it gets neutral. then i try again and the same happens.

basic info:

IP: 37.123.118.70 (have been used for spam by the earlier owner)

Domain: lasse-it.dk

Sender mail: lasse@lasse-it.dk

Receiver mail: lasse0108@live.dk

Hope somebody will help with this.

mail i get back are atached below.