James Raftery wrote:
>On Mon, Aug 21, 2000 at 03:34:13PM +0200, mailing wrote:
>> In the log I've seen a few messages refused from the destination host(on the
>internet) because the from line is invalid. in fact the from line contains FROM: <>
>. Does anyone know what this, what it means and why..?
>
>An empty envelope sender is used for bounce messages. Hosts that refuse
>them are broken.
Hmm. Not too long a go, we were getting a lot of spam
with "From: <>" and "Are you ready to GRADUATE" in the subject.
We ended up denying all incoming SMTP from 4.48.43.* .
FYI,
Brian
