On Fri, 3 Sep 2004 17:32:22 -0400, Andrew Newton <andy(_at_)hxr(_dot_)us> wrote:
Therefore, that leaves one under-discussed question: should a prefix be
used to avoid collision with other records as one measure of preventing
the requirement of DNS over TCP?
My understanding from discussing uses of the PRA is that the PRA
doesn't need to be a functioning mailbox, and that its domain doesn't
even need to have an MX or A record.
So can't people just use a prefix anyway? Sites concerned about
conflicts with other large TXT records can still use a prefix. They
just need to add a header field like:
Resent-Sender: sender(_at_)_rmx(_dot_)mydomain(_dot_)tld
Presumably most Sender-ID compliant MTAs will have facilities for
automatically adding such headers anyway.
Thus, I support not mandating any prefix.
David