how difficult is it to fake an email address and email headers?

[hba2pd]

Hello,

I would like to know how difficult is it to fake an email address and
the informations in email headers such as the originating IP address?

Best regards.

 

[Sue Mosher [MVP-Outlook]]

Thousands of spammers do it with millions of messages every day.

--
Sue Mosher, Outlook MVP
Author of Configuring Microsoft Outlook 2003

and Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers