blob: ed46c4c95d62b67d596f5ca3f354643d2058b843 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
|
require 'custodian/protocoltest/tcp'
#
# The MX (DNS + smtp) test.
#
# This object is instantiated if the parser sees a line such as:
#
###
### bytemark.co.uk must run mx otherwise 'mail fail'.
###
#
#
module Custodian
module ProtocolTest
class MXTest < TestFactory
#
# Constructor
#
def initialize( line )
# Save the line away
@line = line
# The main domain we're querying
@host = line.split(/\s+/)[0]
end
#
# Allow this test to be serialized.
#
def to_s
@line
end
#
# Run the test.
#
def run_test
# reset the error, in case we were previously executed.
@error = nil
#
# Get the timeout period.
#
settings = Custodian::Settings.instance()
period = settings.timeout()
#
# The MX-hosts
#
mx = Array.new()
#
# Lookup the MX record
#
begin
timeout( period ) do
Resolv::DNS.open do |dns|
ress = dns.getresources(@host, Resolv::DNS::Resource::IN::MX)
ress.map { |r| mx.push( IPSocket::getaddress(r.exchange.to_s) ) }
end
end
rescue Timeout::Error => e
@error = "Timed-out performing DNS lookups: #{e}"
return nil
end
#
# At this point we should have an array of IPv4 or IPv6 addresses.
#
# If that array is empty then there will be no incoming mail because
# there are now working MX records in DNS - or because the domain
# has expired, etc.
#
# So on that basis we must alert.
#
if ( mx.empty? ) then
@error = "Failed to perform DNS lookup of MX record(s) for host #{@host}"
return false
end
mx.each do |bob|
puts "XXXX #{bob}"
end
return true;
end
#
# If the test fails then report the error.
#
def error
@error
end
register_test_type "mx"
end
end
end
|
