[ovs-dev] Returned mail: see transcript for details

[Mail Delivery Subsystem]

Your message was undeliverable due to the following reason:

Your message could not be delivered because the destination server 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 1 days:
Mail server 104.179.144.156 is not responding.

The following recipients could not receive this message:
<dev at openvswitch.org>

Please reply to postmaster at openvswitch.org
if you feel this message to be in error.