(e.g. latest reports are problems with outbound connections to
mbcico/1.0.6.8 with CRAM-MD5 authentication failures) - so added a new
per-link configuration key: "BinkpPlainAuthOnly" (default values is false).
Set this value to true to use *only* plain-text password authentication
for both inbound and outbound connections with this node. This should help
debug password issues, at minimum, and might work-around CRAM-MD5
incompatibilities with some mailers, if that is in fact the issue.
EchoCfg will need a way to set this option, but for now, just set it by
hand in the sbbsecho.ini (for each [node] section where you need it).

If you set BinkpPlainAuthOnly to true, do *not* set BinkpAllowPlainAuth
or BinkpAllowPlainText to false - that would be bad.