Module: Sisimai::Reason::NetworkError

Defined in:: lib/sisimai/reason/networkerror.rb

Overview

Sisimai::Reason::NetworkError checks the bounce reason is “networkerror” or not. This class is called only Sisimai::Reason class. This is the error that SMTP connection failed due to DNS look up failure or other network problems.

A message is delayed for more than 10 minutes for the following
list of recipients:

kijitora@neko.example.jp: Network error on destination MXs

Constant Summary collapse

Index =

[
  "address family mismatch on destination mxs", # OpenSMTPD/smtpd/mta.c
  "all routes to destination blocked",          # OpenSMTPD/smtpd/mta.c
  "bad dns lookup error code",                  # OpenSMTPD/smtpd/mta.c
  "could not connect and send the mail to",
  "could not contact dns servers",
  "could not retrieve source address",          # OpenSMTPD/smtpd/mta.c
  "dns records for the destination computer could not be found",
  "establish an smtp connection",
  "exceeded maximum hop count",                 # Courier
  "host is unreachable",
  "host name lookup failure",
  "host not found, try again",
  "listed as a best-preference mx",
  "loop detected",                              # OpenSMTPD/smtpd/mta.c
  "maximum forwarding loop count exceeded",
  "network error on destination mxs",           # OpenSMTPD/smtpd/mta.c
  "no relevant answers",
  "temporary failure in mx lookup",             # OpenSMTPD/smtpd/mta.c
  "too many hops",
  "unable to resolve route ",
  "unrouteable mail domain",
].freeze

Pairs =

[
  ["malformed", "name server reply"],
  ["mail ", "loop"],
  ["message ", "loop"],
  ["no ", "route to"],
].freeze

Class Method Summary collapse

.description ⇒ Object
.match(argv1) ⇒ Boolean

Try to match that the given text and regular expressions.
.text ⇒ Object
.true(_argvs) ⇒ Boolean

The bounce reason is network error or not.

Class Method Details

.description ⇒ `Object`

44	# File 'lib/sisimai/reason/networkerror.rb', line 44 def description; return 'SMTP connection failed due to DNS look up failure or other network problems'; end

.match(argv1) ⇒ `Boolean`

Try to match that the given text and regular expressions

Parameters:

argv1 (String) —

String to be matched with regular expressions

Returns:

(Boolean) —

false: Did not match, true: Matched

# File 'lib/sisimai/reason/networkerror.rb', line 49

def match(argv1)
  return false if argv1.nil? || argv1.empty?
  return true  if Index.any? { |a| argv1.include?(a) }
  return true  if Pairs.any? { |a| Sisimai::String.aligned(argv1, a) }
  return false
end

.text ⇒ `Object`

43	# File 'lib/sisimai/reason/networkerror.rb', line 43 def text; return 'networkerror'; end

.true(_argvs) ⇒ `Boolean`

The bounce reason is network error or not