Tony,
TH> An MSA listening on either port 25 or 587 should NOT be looking at
TH> To/Cc/Bcc headers. They should only be looking at RCPT TO. See RFC 2476.
From the mail-arch writing effort, I am not so clear about the boundary
between MUA and MSA in the community's mind.
I'd like to change that.
In general, my sense is that the MSA is entitled to perform quite a bit
of MUA funtionality, in order to off-load the MUA, both computationally
and in terms of network traffic.
If this is a correct assessment, then messing with headers is
acceptable.
I would very much appreciate getting some dialogue about this on the
list.
d/
--
Dave Crocker <dcrocker-at-brandenburg-dot-com>
Brandenburg InternetWorking <www.brandenburg.com>
Sunnyvale, CA USA <tel:+1.408.246.8253>