* Prior to V8.7, this behavior was supported only if UGLYUUCP was defined in conf.h when sendmail was
compiled.
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1114 | Chapter 24: The O (Options) Configuration Command
24.9.124.2 UnixFromLine with mail files
Under Unix, in a file of many mail messages, such as a mailbox, lines that begin with the
five characters ???From ??? are used to separate one message from another. This is a convention
that is not shared by all MUAs. The sendmail program appends mail messages to files
under only two circumstances: when saving failed mail to the user??™s dead-letter file, and
when delivering to a local address that begins with the / character. In appending messages
to files, it uses the UnixFromLine ($l) option to define the form of the message separator
lines.
For sites that use the Rand MUA (and that do not also use UUCP), the UnixFromLine ($l)
option can be defined to be four Ctrl-A characters:
Dl^A^A^A^A
O UnixFromLine=^A^A^A^A
24.9.125 UnsafeGroupWrites
Check unsafe group permissions Deprecated
In processing a ~/.forward file or a :include: file, a question arises when group- or worldwrite
permission is enabled. Should sendmail trust the addresses found in such files?
Clearly the answer is ???no??? when world-write permission is enabled.
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