Re: Spoofed Email

[ha...@t-online.de]

>> 
>> SA is working for the most part beyond expectations, the only problem I=B9m
>> having is filtering spoofed email address (i.e. Valid_user@ourdomain.com). =
>> I
>> am able to filter out non-valid user addresses (i.e. spammer@ourdomain.com)=
>> .
>> I run SA-Update daily, have piped well over 500 of these messages through
>> sa-learn, yet they still come through. I know this is a generic outline of
>> the problem, but it=B9s a start, if you need more info I can send it.
>> 
Hi,

while this may not be a solution for everybody (and might even be a good thing for some of your users
and a bad thing for others), at some time I decided that mail coming from the internet with a local
sender must be mail submission - and requires smtp auth.

It turned out that there were a few exceptions; at that time some mails from ebay where
sent from their server with the ebay member as from address - they seem to have changed
that because it does not work with SPF or DKIM either

Wolfgang