Re: [exim] [exim-dev] SPF Checking

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Συντάκτης: Magnus Holmgren
Ημερομηνία:  
Προς: exim-users
Αντικείμενο: Re: [exim] [exim-dev] SPF Checking
Wednesday 10 May 2006 16:48 skrev Chris Blaise:
>     I have the spf check in my acl_smtp_mail acl.  The problem is that
> the spf check only occurs if the sender uses HELO to set the domain.  If
> they don't, the check will not happen.  If I were trying to spoof and knew
> some sites wouldn't check helo, I wouldn't bother sending it!


But sending HELO or EHLO (with whatever arguments) is a requirement of RFC
2821. I don't think any legitimate mailers leave it out, so I think you could
dare rejecting those who do (exempting your own users of course).

--
Magnus Holmgren
holmgren@???