Re: [exim] Cannot send mails to @hotmail.com addresses

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?

- Marc