mailing list security

[imadsani]

Hey,

I'm pretty sure this comes under security, hence the thread here.

One of my clients raised a complaint saying that the messages his company sends using the mailing lists are showing up on Google search results and can be accessed by anyone, no password protection or anything.

Has anyone experiences such a problem?

Secondly, I've gone through mailing list options but can't seem to find an option to prevent unauthorized viewing of these messages.

Please help.

[Infopro]

Secondly, I've gone through mailing list options but can't seem to find an option to prevent unauthorized viewing of these messages.

The Mailman documentation should be helpful:
GNU/Mailman Administrator's Manual

Search that page via your browser for the word: private

Archival Options

Is archive file source for public or private archival?

If set to "private," then only list members are able to access the contents of the list archive. They will be prompted for their list password when the try to access the contents. Setting this to "public" will allow anyone to access the list archives through the listinfo page.

Note: think carefully about whether your list membership wants their identities and postings made available to the world at large by making the archive public. Public access means that web spiders will be able to store and make available member's writings outside of the context of the list to which they were posted to the list.