On Wed, Nov 19, 2008 at 08:26:10PM +0100, Patrick Ben Koetter wrote:
> I was looking for a (current) RFC section that says SMTP servers MUST accept
> messages sent by the null sender "<>", but almost all I found were references
> that say notifications MUST be sent as null sender.
The empty sender is a valid sender. It must not be rejected as
syntactically invalid.
It is unwise to reject mail from the empty sender, but nobody can force
you do accept it. You can reject any mail transaction you see fit to
reject for any reason.
If you do reject all bounces, sites may choose to reject your mail,
because you are not interested in being informed of delivery problems
(and are unable to respond appropriately).
--
Viktor.
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