Personally, I'm VERY leary of any header for identification purposes.
Virtually anything can be spoofed. The only things I put any stock into at
all is contact info for sales in the body and the Received From: header
immediately prior to my system.
At 10:29 PM 5/26/97 -0400, you wrote:
>Someone forwarded to me a particularly slimy piece of spam, 15kb in
>length, that did not have a From: or Reply-to: header, but did an
>X-Persona: <NAME_OF_ISP> header line. Equinox.net and Psi.net were on
>the received from: headers. Anyone else have experience with this? The
>person who sent it to me claimed to have received it 25 separate times in
>the last 24-36 hours.