verb_on, verb_off, verb_none, verb_never)
Some batch SMTP (BSMTP) implementations support the use of the VERB
command to control the nature of their replies. On the client side the
verb_on command tells PMDF to issue a VERB ON command in
the BSMTP command sequence; verb_off tells PMDF to issue a
VERB OFF command. The verb_never and/or the
verb_none keyword tells PMDF not to issue any VERB
commands. verb_never is the default, and this default
should not be changed.
On the server side, the verb_never keyword causes VERB
commands in the BSMTP stream to be accepted but ignored.
verb_none can be used to enable processing of VERB
commands.
See Section 3.8.2 for details on how these keywords are used on bit_ and anje_ channels.