I’ve done those steps:
1. Open file /etc/hosts with gedit:
$ sudo gedit /etc/hosts
2. Add the following line to the end of hosts:
66.163.181.184 scs.msg.yahoo.com
++++++++++++++++++++++++++++++++++++++++++++++
# The following lines are desirable for IPv6 capable hosts ::1 localhost ip6-localhost ip6-loopback fe00::0 ip6-localnet ff00::0 ip6-mcastprefix ff02::1 ip6-allnodes ff02::2 ip6-allrouters ff02::3 ip6-allhosts 66.163.181.184 scs.msg.yahoo.com
++++++++++++++++++++++++++++++++++++++++++
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