Hi!
The draft says:
If a verifier receives a message with a donotexplode request and
a later hop has indicated that it has exploded the message then
the message SHOULD be rejected.
So according to how I'd plainly read it, the verifier would only check
if any subsequent hop has the "exploded" flag.
However, what if a hop explodes the message without setting the flag?
Should a verifier possibly also check whether it has more than one RCPT
TO in the incoming SMTP session? And for rt= with more than one item
after the "donotexplode" hop?
However, rt may contain more than the actual recipient set, so would
prohibiting rt with more than one element after "donotexplode" possibly
be "overblocking"? (Even if it doesn't really make sense for a
non-exploding hop to add more than one rt?)
For "donotmodify" it's specified that header fields may be added still.
If the recipes were optimal, that would mean that there are only "c"
entries. However, if a site reorders existing fields, it would need to
use "d" at least somewhat (due to the monotonicity requirement on copy
rules), and of course if a site is extra simplistic it might use "d"
even when "c" would work. So in the end we'd possibly need to create a
set of fields in the new version, and for each header field in the old
version, check if it's in the new set? Or how would you implement that?
Hannah.
--
Hannah Stern
Software Developer
Mail Transfer Development
1&1 Mail & Media Development & Technology GmbH | | |
Phone: +49 721 91374-4519
E-Mail: [email protected] | Web: www.mail-and-media.com www.gmx.net
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