On Fri, 03 Oct 2014 22:02:59 +0200 Reindl Harald <h.rei...@thelounge.net> wrote:
> hard to say in general, that are not so much X-Headers > i have seen a lot of spam really tagged with such > headers because some outgoing mailserver had indeed > a spamfilter and the messages did not reach the block > score and depending on how many hops a mail takes > the number of such headers increases That's true, but I think if we see headers from multiple vendors, it's pretty suspicious. Not many sites filter their mail via Barracuda *and* IronPort *and* KLMS *and* PerlMx *and* ... etc. Regards, David.