From the nodelist:

;S   PING/TRACE FUNCTION:
;S
;S   Some nodes in Micronet may implement the PING and TRACE flags as
;S   follows:
;S
;S   If a message destined to "PING" arrives at its final destination
;S   and this final destination flies the "PING" flag then the
;S   receiving node will bounce the message back to the original
;S   sender clearly displaying all the original VIA kludge lines.
;S
;S   If a message destined to "PING" arrives at its final destination
;S   but this final destination does _not_ fly the "PING" flag then the
;S   message may be deleted from the inbound queue without further
;S   follow-up.
;S
;S   If a message destined to "PING" arrives at a node which flies
;S   the TRACE flag but is merely passing through to another destination
;S   then the in-transit node will notify the sender of this occurence
;S   and will forward the original mail unaltered towards its final
;S   destination.

I hope this helps.

-- Sean

 

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