In order to analyze and block a spam, we need its original source data. How to do this depends on which email client you use:

Thunderbird	Ctrl + U
Apple Mail	Cmd + Alt + U
Windows Live Mail	Ctrl + F3
Opera	≣ Menu > View All Headers...
Geary	↓ > View Source

Microsoft Outlook unfortunately doesn't store the original message data, making retrieval of the full headers and source difficult. In that case, you can request to submit messages using email to reportspam@halon.se (by forwarding as an attachment) instead.