Marc Sherman wrote: > Mike Cardwell wrote: >> To further expand on this. It appears that this technique does not >> "bypass" their filters, but gives the message a much higher likelyhood >> of passing them only. I noticed this when trying to send an email with a >> .exe attachment to a hotmail account, which was silently dropped. So I >> did a bunch of further tests to verify that this was the case. So what I >> did was updated the router to add fake In-Reply-To and References >> headers to any email destined for a hotmail account to trick hotmail >> into thinking that the email was a reply. When I did this, all email >> seems to be getting through. When I remove this, it starts getting >> blackholed again: > Do you actually need the X-Hotmail-Fodder headers, or are the > References/I-R-T headers enough to get past the filters?
I did consider that. The headers on their own don't seem to be a free pass, but they do help. Otherwise any old spammer could spam all the hotmail addresses they wanted. Mike -- ## List details at http://www.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://www.exim.org/eximwiki/
