The 3.2 release notes and mail_manual_setup(7) mention problems in
file locking between mh-based mailers and BSD-based mailers.  However,
I could find no indication of what the default was, or what the
"correct" value would be.
>From the man page
  Valid values for MAILLOCKING are as follows:
  0   Specifies lockf.
  1   Specifies lockfile.
  2   Specifies Multi-channel Memo Distribution Facility (MMDF).  This
      applies to MH only.
  4   Specifies lockf.
  5   Specifies that both lockf and lockfile are used.
I got two suggestions for #5, and one suggestion to try whatever the
default wasn't.  No one offered any thoughts on why this matters or
what the default is.  I guess I need to blindly try and see what helps.
Thanks to:
    Murat Balci <balci_at_bornova.ege.edu.tr>
    olle_at_cb.uu.se (Olle Eriksson)
    ron_barrett_at_corp.Cubic.COM
Jim Wright                   Keck Center for Integrative Neuroscience
jwright_at_phy.ucsf.edu         Box 0444, Room HSE-802
voice 415-502-4874           513 Parnassus Ave
fax   415-502-4848           UCSF, San Francisco, CA  94143-0444
Received on Fri Dec 22 1995 - 05:10:09 NZDT