The problem of back-scatter spam - the bounced messages generated when some fiendish spammer has spoofed your email address in the `from' email field of their outgoing crap - has been tacked by Astaro.
The Reading-based IT security vendor says that the its Astaro Security Gateway system can spot this increasingly prevalent form of spam and filter it out of the email system.
The technology used on the Astaro server is called BATV - Bounce Address Tag Validation - and is based on the open source solution of the same name.
What the application does is quite clever, as it inserts an encrypted signature into the hidden header of outbound emails. If the signature isn't present on any email `bouncing back' the software tags and files the message accordingly.
A simple solution to a growing problem...