From: Bill Cole (postfixlists-070913billmail.scconsult.com)
Date: Thu Mar 06 2008 - 06:45:00 CST

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At 11:17 PM -0700 3/5/08, Joseph L. Casale wrote:
>In RH and PK's Book of Postfix on page 62, the claim that the
>Recipient specified in the TO header should not be used when
>restricting messages, yet the recipient defined in the envelop are
>the actual recipients the message was delivered to.
>
>Looking at a copy of message, how does one deduce the envelop
>recipient vs. the To header recipient?

The "To header recipients" are easily determined by looking at a
message: there's a "To" header with addresses.

The envelope recipients are not always shown in headers, although
there may be a 'for' clause in one or more Received headers
identifying an envelope recipient and Postfix also adds a
"X-Original-To" header in some circumstances with the envelope
recipient for that copy of the message. Except for rare MTA cases
(not including Postfix) an individual copy of a message won't ever
show all of the the envelope recipients.

--
Bill Cole
billscconsult.com

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