IP Technical question

[Chris Edwards]

On Thu, 29 Jan 2009, Richard Clayton wrote:

| Similarly, although unanswered calls don't have to be recorded, traffic
| data for email spam has to be retained by the ISP, even if they never
| delivered it to the customer, and the customer is unaware that it even
| existed !  Since there's no obvious requirement to document what was or
| was not delivered, this means that a police officer who requests a list
| of email correspondents will be presented with about 10 times as much
| data as necessary, with no indication as which tenth is relevant.

I can see it now.  Police officer: 

"Hmmm - the suspect appears to be in regular contact with nigerian fraudsters"...