General-Purpose Mail Filter
Switch to this user’s privileges after startup.
See Starting and Stopping, for a discussion of
mailfromd runs under and the options that
affect them. See also
Retain the supplementary group name when switching to user
privileges. By default
mailfromd clears the list of
supplementary groups when switching to user privileges, but this statement
allows to retain the given group. It can be specified multiple times
to retain several groups. This option may be necessary to
maintain proper access rights for various files. See Starting and Stopping.
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