EMAIL SPOOFING FRAUD/SCAM

The sender information shown in e-mails (the "From" field) can be spoofed easily, though nowadays many domains have the Sender Policy Framework implemented, which helps prevent the e-mail spoofing. This technique is commonly used by Spammers to hide the origin of their e-mails and leads to problems such as misdirected bounces (i.e. e-mail spam backscatter).