Delivery reports about your e-mail

[kongh@alibaba-inc.com]

The message was undeliverable due to the following reason(s):

Your message could not be delivered because the destination computer was
not reachable within the allowed queue period. The amount of time
a message is queued before it is returned depends on local configura-
tion parameters.

Most likely there is a network problem that prevented delivery, but
it is also possible that the computer is turned off, or does not
have a mail system running right now.

Your message could not be delivered within 6 days:
Host 150.130.77.142 is not responding.

The following recipients could not receive this message:
<ietf-provreg-logger@cafax.se>

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