-x
Ignored OSF and AIX 3.x only
V8 sendmail prints an error if an
illegal switch is specified (whereas other versions
of sendmail silently ignore
them). The mailx program that
is supplied with OSF/1 and AIX issues an illegal
-x switch. To
keep sendmail from uselessly
complaining under OSF/1 and AIX, that switch is
specifically ignored. To get the same behavior with
AIX under V8.1 sendmail, look
for _osf_ in
main.c and uncomment the code
necessary to ignore that switch.
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