--On Samstag, Februar 28, 2004 12:48:25 +0100 Alex van den Bogaerdt
<alex(_at_)ergens(_dot_)op(_dot_)het(_dot_)net> wrote:
[...]
In theory, when you are explicit on _why_ you reject a connection, rfci
should not list you.
mail from:<>
rcpt to:<postmaster(_at_)yourdomain>
55x I am SES protected. This is not a valid bounce. See http://....
He would still block mails to postmaster. And <> is a perfectly valid
envelope sender for all kinds of mails where there is no reason why a
bounce should be returned (typically automatically generated mails).
I use <> for all our robot generated mails as nobody would read the bounces
and any retransmission is unnecessary (e-commerce application, who needs
order confirmation mails when the goods have been delivered already?).
AFAICS many people seem to believe that <> is only meant for bounces while
RFC2821 only states that bounces MUST be sent with that enevelope sender. I
can see no reason why people try to block mails with empty envelope sender.
Ralf