On Thu, Nov 9, 2017 at 10:09 AM, Ralph Seichter <m16+post...@monksofcool.net> wrote: > I don't know what you mean by "protocol correct" re trace information. > In any case, https://tools.ietf.org/html/rfc5321#section-4.4 states:
The RFC states that Received headers must be inserted and that they must not be altered. Spam filters (and specifically appliances like Barracuda) are /exploiting/ that trace information to exclude messages. They are looking at the origin Received header, deciding that it looks like a residential connection and excluding the message based on that. So why are you quoting RFCs? I will fake timestamps, change headers and insert ascii-art cats into my messages if I think it will improve delivery. That is what spammers are doing, that is what spam filters are looking for and therefore I will do whatever I have to do to compete.
