*A considerable part of this work was done while under the employ of the INGRES Project at the University of California at Berkeley and at Britton Lee.
[1]except when mailing to a file, when sendmail does the delivery directly.
[2]Obviously, if the site giving the error is not the originating site, the only reasonable option is to mail back to the sender. Also, there are many more error disposition options, but they only effect the error message -- the ``return to sender'' function is always handled in one of these two ways.
[3]Disclaimer: Some special processing is done after rewriting local names; see below.
[4]Dynamic configuration tables are currently being considered for MMDF; allowing the installer to select either compiled or dynamic tables.
[5]The MMDF equivalent of a sendmail ``mailer.''
[6]This is similar to the NBS standard.