7.24 on
page 241) command-line switch when the command line is read but does not issue warnings
until after the configuration file is read. That way, the configuration file determines
how X-Authentication-Warning: headers will be issued.
The PrivacyOptions option is safe. If specified from the command line, it does not cause
sendmail to relinquishits special privileges. Because it is really a mask, specifications in the
configuration file or on the command line can only make it more restrictive.
24.9.86.1 PrivacyOptions=authwarnings
Setting authwarnings causes sendmail to insert special headers into the mail message that
advise the recipient of reasons to suspect that the message might not be authentic. The
general form of this special header is shown here. The possible reasons are listed in
Chapter 25 on page 1120.
X-Authentication-Warning: ourhost: reason
24.9.86.2 PrivacyOptions=goaway
This is a shorthand way to set authwarnings, noexpn, novrfy, noverb, needmailhelo,
needexpnhelo, needvrfyhelo, and nobodyreturn.
24.9.86.3 PrivacyOptions=nobodyreturn
Ordinarily, the body of the original message in a bounced message will be returned with
the bounce. Also, if the DSN extension RET (?ยง6.7.40 on page 247) indicates that the original
body should be returned, it will. For example:
MAIL From:
RET=FULL
Beginning with V8.
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