6.2 on page 757), it passes to
that delivery agent an environment that includes only the items described earlier.
Some delivery agents, however, might require additional environment variables to
* When delivering to files, sendmail will become the owner of the file if that file??™s set-user-id bit is set and if no
execute bits are set.
?? We say ???must??? because in an NFS environment, root is mapped to nobody, so in that instance, even root
won??™t be able to write to bill??™s files unless sendmail becomes bill.
This is the Title of the Book, eMatter Edition
Copyright ?© 2007 O??™Reilly & Associates, Inc. All rights reserved.
4.3 SMTP Probes | 157
function properly. For those special cases, sendmail offers the E configuration command
to set individual environment variables that will be passed to all delivery
agents:
Evar=value
The var is the environment variable that will be either defined or redefined. It is
immediately followed (withno intervening space) by an equal-sign and then (again
with no intervening space) by the value that will be assigned to it.
If the =value is missing, sendmail looks up the variable var in its environment and, if
it is found, uses that value. If the = is present but the value is absent, the var is
assigned an empty string (a single zero byte). If the var is missing, a variable name
that is an empty string is used.
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