25.9 Forwarding with Re-Sent Headers
Some MUAs allow users to forward (resend, bounce, or redirect) messages to other
users. For example, the mush(1) MUA forwards the current message to the user
named fred with the following command:
message 1 of 3> m -f fred
Messages can also be forwarded with dist(1) from mh(1) and from within other
MUAs.
When messages are forwarded, header lines that describe the forwarding user must
begin withth e Resent- prefix. When fred receives this message, he sees two similar
header lines:
From: original-sender
Resent-From: forwarding-sender
When both the original From: and the forwarded Resent-From: appear in the same
header, the Resent- form is always considered the most recent.
The sendmail program examines only a few header names to see whether a mail message
has been forwarded. Those that it knows are listed in Table 25-12.
Table 25-11. MIME headers
Header ?§ Flags Defined by
MIME-Version: ?§25.12.26 on page 1160 n/a RFC2045
Content-Disposition: ?§25.12.8 on page 1153 n/a RFC2183
Content-Id: ?§25.12.9 on page 1153 n/a RFC2045
Content-Transfer-Encoding: ?§25.12.11 on page 1154 H_CTE RFC2045
Content-Type: ?§25.12.12 on page 1154 H_CTYPE RFC2045
Table 25-12. Known re-sent headers
Resent- form of Header
Resent-Bcc: Bcc:
Resent-Cc: Cc:
Resent-Date: Date:
Resent-From: From:
This is the Title of the Book, eMatter Edition
Copyright ?© 2007 O??™Reilly & Associates, Inc.
Pages:
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