On Tue, 23 Aug 2005, Keith Moore wrote:
no, it "just" means that the MTA has to transmit multiple copies of the same
message to the same SMTP server, differing only in their signature and bcc
header field.
My understanding is that BCC should not be seen in SMTP transmission,
except first hop when SMTP is used in place of SUBMIT. My understanding
is that automated signatures like DKIM are expected to be added by MTA
after the message has been submitted and therefore BCC field would not
be present in such a message (the address previously in BCC would be one
or only address in envelope RCPT TO). Therefore I do not understand how
can MTA possibly transmit multiple copies "differing in their signature
and BCC heaader field".
--
William Leibzon
Elan Networks
william(_at_)elan(_dot_)net
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