Module: Sisimai::Reason::RateLimited

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

Overview

Sisimai::Reason::RateLimited checks the bounce reason is “ratelimited” or not. This class is called only Sisimai::Reason class.

This is the error that SMTP connection was rejected temporarily due to too many recipients or too many concurrency connections to the remote server. This reason has added in Sisimai 4.1.26.

<kijitora@example.ne.jp>: host mx02.example.ne.jp[192.0.1.20] said:
  452 4.3.2 Connection rate limit exceeded. (in reply to MAIL FROM command)

Constant Summary collapse

Index = 
[
  "has exceeded the max emails per hour ",
  "please try again slower",
  "receiving mail at a rate that prevents additional messages from being delivered",
  "temporarily deferred due to unexpected volume or user complaints",
  "throttling failure: ",
  "too many errors from your ip",         # Free.fr
  "too many recipients",                  # ntt docomo
  "too many smtp sessions for this host", # Sendmail(daemon.c)
  "trop de connexions, ",
  "we have already made numerous attempts to deliver this message",
].freeze
Pairs = 
[
  ["exceeded ", "allowable number of posts without solving a captcha"],
  ["connection ", "limit"],
  ["temporarily", "rate limited"],
  ["too many con", "s"],
].freeze

Class Method Summary collapse

Class Method Details

.description ⇒ Object 



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# File 'lib/sisimai/reason/ratelimited.rb', line 33

def description; return 'SMTP connection rejected temporarily due to too many concurrency connections to the remote host'; 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



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# File 'lib/sisimai/reason/ratelimited.rb', line 38

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 



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# File 'lib/sisimai/reason/ratelimited.rb', line 32

def text; return 'ratelimited'; end

.true(argvs) ⇒ Boolean

Rejected by domain or address filter ?

Parameters:

Returns:

  • (Boolean) —

    true: is rate limited false: is not rate limited

See Also:



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# File 'lib/sisimai/reason/ratelimited.rb', line 50

def true(argvs)
  return true if argvs['reason'] == 'ratelimited'
  return true if Sisimai::SMTP::Status.name(argvs['deliverystatus']) == 'ratelimited'
  return match(argvs['diagnosticcode'].downcase)
end