On Wed, 16 Apr 2003, Michael Jakscht wrote:
> which RFC is involved in the function of sender verify?
None. Sender verifying (or any other policy control) is not part of SMTP.
> In detail I mean in what RFC is it stated that the remote SMTP
> server should accept a MAIL FROM:<> ?
I don't think any RFC states that a remote server must accept anything.
It couldn't, really, because what you decide to accept is entirely up to
you. However, RFC 2821 specifies that bounce messages must be sent with
an empty reverse path:
4.5.5 Messages with a null reverse-path
There are several types of notification messages which are required
by existing and proposed standards to be sent with a null reverse
path, namely non-delivery notifications as discussed in section 3.7,
other kinds of Delivery Status Notifications (DSNs) [24], and also
Message Disposition Notifications (MDNs) [10].
Earlier RFCs (821, 1123) specified the same thing. So, if the receiving
server wants to accept bounce messages that conform to the RFCs, it has
to accept messages with null reverse paths.
--
Philip Hazel University of Cambridge Computing Service,
ph10@??? Cambridge, England. Phone: +44 1223 334714.
