Note that a blank line must be truly blank. If you put space
or tab characters in it, thus forming an ???empty-looking??? line, the header will not be
separated from the body as intended.
Send this file to yourself again, running sendmail by hand as you did before:
% /usr/sbin/sendmail you
Notice that our Subject: header line was carried through without change:
From you@Here.US.EDU Fri Dec 14 08:11:44 2007
Received: (from you@localhost)
by Here.US.EDU (8.12.7/8.12.7)
id d8BILug12835 for you; Fri, 14 Dec 2007 08:11:44 -0600 (MDT)
Date: Fri, 14 Dec 2007 08:11:43
From: you@Here.US.EDU (Your Full Name)
Message-Id: 200712141511.d9BMTuX29709@Here.US.EDU>
Subject: a test ?†? note
To: you
This is a one-line message.
* Depending on how the NoRecipientAction option was set, this could be an Apparently-To: header, a Bcc:
header, or even a To: header followed by an ???undisclosed-recipients:;??? (see ?§24.9.81 on page 1060).
This is the Title of the Book, eMatter Edition
Copyright ?© 2007 O??™Reilly & Associates, Inc. All rights reserved.
1.5 Basic Parts of a Mail Message | 9
1.5.4 The Envelope
So that it can more easily handle delivery to diverse recipients, the sendmail program
uses the concept of an envelope. This envelope is analogous to the physical envelopes
that are used for post office mail. Imagine you want to send two copies of a document,
one to your friend in the office next to yours and one to a friend across the country:
To: friend1, friend2@remote
After you photocopy the document, you stuff each copy into a separate envelope.
Pages:
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