5.16 on page 754). The
type of address and the actual address of the final original recipient are reported in the
bounce message:
Final-Recipient: RFC822; nosuchuser@site.com
This Final-Recipient line shows the type of address (here RFC822) and the actual address
(here nosuchuser@site.com) of the final recipient.
Beginning withV8.10, sendmail composes this address expression only once (when the
message is queued) and stores it in case the message bounces. The text following the Final-
Recipient: is stored in the r line in the qf file, and looks like this:
rRFC822; nosuchuser@site.com
Note that sendmail performs no checks on the text following the r. This means that invalid
DSN information placed there will become the text that follows the Final-Recipient: in th e
bounce message.
11.12.17 R line
Recipient??™s address All versions of sendmail
The qf file lists all the recipients for a mail message. There can be one recipient or many.
When sendmail creates the qf file, it lists eachrecipient address on an individual R line. The
form of the R line in the qf file looks like this:
Rflags:addr
This is the Title of the Book, eMatter Edition
Copyright ?© 2007 O??™Reilly & Associates, Inc. All rights reserved.
11.12 The qf File Internals | 455
The R must begin the line. Only a single address can appear on each R line. There can be
multiple R lines.
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