Web lists-archives.com

Re: policy around 'wontfix' bug tag

On Mon, Feb 05, 2018 at 05:31:29PM +0000, Brian wrote:
> AfAIK. there isn't any way to determine whether a message posted to
> -user is from a non-subscriber.

I believe some people are using the one of the X-Spam* headers
and looking for the LDOSUBSCRIBER substring.  Which is extremely
non-obvious, and probably not a vector that ordinary users can
easily pursue.