sendmail - sendmail emulator interface for nullmailer

       This  program  is a front end program for nullmailer-inject and nullmailer-smtpd.  It is used by programs
       that expect a sendmail interface for sending email.   After  parsing  the  command-line  arguments,  this
       program executes either nullmailer-inject or nullmailer-smtpd depending on the presence of the -bs option
       on  the  command-line.   See  the  documentation  for  nullmailer-inject  for details on how messages are
       reformatted and queued.

       sendmail - sendmail emulator interface for nullmailer

-BTYPE-CFILE-dDEBUG-hCOUNT-i-LTAG-NDSN-n-OOPTION-oOPTION-pPROTOCOL-qTIME-RRETURN-U-VENVID-v-XLOGFILE
              Ignored for compatibility

       -bm    Read mail from standard input (default).

       -bp    List information about mail queue. This executes mailq.

       -bs    Use the SMTP protocol on standard input and standard output. This executes nullmailer-smtpd.

       -FADDRESS
              Sets the full name of the sender.

       -fADDRESS
              Sets the envelope sender address.

       -rADDRESS
              An alternate and obsolete form of the -f flag.

       -t     Read message for recipients and ignore the command-line arguments.

mailq(1), nullmailer-inject(1), nullmailer-smtpd(1)

                                                                                                     sendmail(1)

sendmail [ flags ] [ recipients ] < message