Version-Release number of selected component:
yum-cron-3.4.3-129.fc20

Additional info:
reporter:       libreport-2.1.11
cmdline:        /usr/bin/python -tt /usr/sbin/yum-cron /etc/yum/yum-cron-hourly.conf
dso_list:       python-libs-2.7.5-9.fc20.x86_64
executable:     /usr/sbin/yum-cron
kernel:         3.12.7-300.fc20.x86_64
runlevel:       N 5
type:           Python
uid:            0

Truncated backtrace:
socket.py:571:create_connection:error: [Errno 111] Connection refused

Traceback (most recent call last):
  File "/usr/sbin/yum-cron", line 698, in <module>
    main()
  File "/usr/sbin/yum-cron", line 695, in main
    base.updatesCheck()
  File "/usr/sbin/yum-cron", line 606, in updatesCheck
    self.emitMessages()
  File "/usr/sbin/yum-cron", line 681, in emitMessages
    map(lambda x: x.sendMessages(), self.emitters)
  File "/usr/sbin/yum-cron", line 681, in <lambda>
    map(lambda x: x.sendMessages(), self.emitters)
  File "/usr/sbin/yum-cron", line 233, in sendMessages
    s.connect(self.opts.email_host)
  File "/usr/lib64/python2.7/smtplib.py", line 310, in connect
    self.sock = self._get_socket(host, port, self.timeout)
  File "/usr/lib64/python2.7/smtplib.py", line 285, in _get_socket
    return socket.create_connection((host, port), timeout)
  File "/usr/lib64/python2.7/socket.py", line 571, in create_connection
    raise err
error: [Errno 111] Connection refused

Local variables in innermost frame:
err: error(111, 'Connection refused')
proto: 6
canonname: ''
af: 2
sock: <socket._socketobject object at 0x8171980>
host: 'localhost'
timeout: <object object at 0x7f03211ef0b0>
res: (2, 1, 6, '', ('127.0.0.1', 25))
socktype: 1
address: ('localhost', 25)
sa: ('127.0.0.1', 25)
source_address: None
port: 25
_: error(111, 'Connection refused')