Not sure the question is phrased correctly, but I have wondered about
this for a while.
When an MTA makes a connection, it sends an e-mail via an envelope
address, no? There is no necessary correlation between this envelope
address and the recipient's To address. IOW, [EMAIL PROTECTED] can end up
with an e-mail in his inbox that appears to have been sent "To"
[EMAIL PROTECTED], even if sam doesn't exist. This is an endless source of
confusion to recipients that don't know how things work. And
obviously I don't quite know how it works either.
Do all MTAs necessarily transmit the envelope address for display?
The only way SIMS can deliver is when it gets a legit envelope
address, no? In Eudora, there is a header called x-envelope I can
turn on, but no envelope header appears in received e-mail that I can
tell.
What really determines how an end-user can see the envelope address,
if ever at all?
Stefan Jeglinski
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