Gerrit,

This may be the RFC requirement that you are looking for: RFC1123 5.2.9
http://www.ietf.org/rfc/rfc1123.txt

"5.2.9 Command Syntax: RFC-821 Section 4.1.2 The syntax shown in RFC-821 
for the MAIL FROM: command omits the case of an empty path: "MAIL FROM: <>" 
(see RFC-821 Page 15). An empty reverse path MUST be supported."

I believe it may be to do with rejected and bounced messages and return 
receipts

Regards,
Scott



At 01:22 PM 10/06/2002 +0200, you wrote:

>S�nke schrieb:
>
> >> What should I say?  They state breaking RFC's is bad and more, but as I
> >> read this bounce, THEY are breaking the RFC, or what do I tell now the
> >> postmaster there?
>
> > they send an empty MAIL FROM - so there is no return path and that IS
> > invalid !!!
>
> > if you want to accept the mail anyway, set the server.tab var right:
>
> > "AllowNullSender"\t"1"\n
>
>I wrote to the postmaster now that this is my fight against Spam:  no
>NullSender allowed.  But I'm not sure, maybe it is mentioned in some RFC
>that NullSender must be valid to verify emailaddresses?  I havn't read
>them all...
>
>
>Gerrit
>--
>=^..^=
>
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