[Mailman-Developers] Don't trust X-No-Archive to keep your secrets.

[J.B. Nicholson-Owens]

Andrew Daviel wrote:
> I found "X-No-Archive" in wikipedia that was apparently honored by
> google when archiving usenet.

Keep in mind that all archivers probably archive the message anyway but 
might treat "X-No-Archive: yes" as a cue to not release that message to 
public queries. In other words, "X-No-Archive: yes" netnews posts are 
archived right alongside all the other posts and Google employees can 
find them in Google's repository of netnews posts.

I believe this is the case for two reasons:
1. Structurally: Few search engine companies will throw away an 
opportunity to collect data when there's so much for that organization 
to gain by indexing that data.

2. Specific to Google: When Google took on DejaNews's archive of Usenet 
posts Google's search engine Google released copies of posts labeled 
"X-No-Archive: yes" for a while.

Overall, I think people are better off understanding that their 
boilerplate is not binding on most people (if anyone) and they need to 
be more careful in what they send.