On Mon, 2003-08-11 at 12:29, Ed Wilts wrote:

> 
> Please note that if you implement this, you have the potential to block
> a *lot* of legitimate e-mail.  For example, this e-mail is coming to
> you from the redhat.com domain, yet it's got my From: address on it.
> It's quite possible for a legitimate user to send e-mail from a
> different domain.  Even if I sent e-mail directly to you, I've got a
> SMART_HOST defined that will send it to you via my ISP, yet keep my
> ewilts.org From: address (and I host multiple domains on my home server).
> 
That's why I suggested Postfix if this is important. FWIW we accept no
freemail at all nor anything from anyone with a freemail return address.
We simply "OK" redhat.com (and our clients' domains) prior to any
envelope filters. Works like a champ.


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