Module: Sisimai::LDA

Defined in:
lib/sisimai/lda.rb

Overview

Sisimai::LDA - Error message decoder for LDA

Constant Summary collapse

LocalAgent = 
{
  # Each error message should be a lower-cased string
  # dovecot/src/deliver/deliver.c
  # 11: #define DEFAULT_MAIL_REJECTION_HUMAN_REASON \
  # 12: "Your message to <%t> was automatically rejected:%n%r"
  "dovecot"    => ["Your message to <", "> was automatically rejected:"],
  "mail.local" => ["mail.local: "],
  "procmail"   => ["procmail: ", "/procmail "],
  "maildrop"   => ["maildrop: "],
  "vpopmail"   => ["vdelivermail: "],
  "vmailmgr"   => ["vdeliver: "],
}.freeze
MessagesOf = 
{
  # Each error message should be a lower-cased string
  "dovecot" => {
    # dovecot/src/deliver/mail-send.c:94
    "mailboxfull" => [
      "not enough disk space",
      "quota exceeded",   # Dovecot 1.2 dovecot/src/plugins/quota/quota.c
      "quota exceeded (mailbox for user is full)",    # dovecot/src/plugins/quota/quota.c
    ],
    "userunknown" => ["mailbox doesn't exist: "],
  },
  "mail.local" => {
    "mailboxfull" => [
      "disc quota exceeded",
      "mailbox full or quota exceeded",
    ],
    "systemerror" => ["temporary file write error"],
    "userunknown" => [
      ": invalid mailbox path",
      ": unknown user:",
      ": user missing home directory",
      ": user unknown",
    ],
  },
  "procmail" => {
    "mailboxfull" => ["quota exceeded while writing", "user over quota"],
    "systemerror" => ["service unavailable"],
    "systemfull"  => ["no space left to finish writing"],
  },
  "maildrop" => {
    "userunknown" => ["cannot find system user", "invalid user specified."],
    "mailboxfull" => ["maildir over quota."],
  },
  "vpopmail" => {
    "filtered"    => ["user does not exist, but will deliver to "],
    "mailboxfull" => ["domain is over quota", "user is over quota"],
    "suspend"     => ["account is locked email bounced"],
    "userunknown" => ["sorry, no mailbox here by that name."],
  },
  "vmailmgr" => {
    "mailboxfull" => ["delivery failed due to system quota violation"],
    "userunknown" => [
      "invalid or unknown base user or domain",
      "invalid or unknown virtual user",
      "user name does not refer to a virtual user",
    ],
  },
}.freeze

Class Method Summary collapse

Class Method Details

.find(argvs) ⇒ String

This method is abstract.

Decodes the message body and return the LDA name, the reason, and the error message

Returns Bounce reason.

Parameters:

Returns:



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# File 'lib/sisimai/lda.rb', line 70

def find(argvs)
  return "" if argvs.nil?
  return "" if argvs["diagnosticcode"].empty?
  return "" if argvs["command"] != "" && argvs["command"] != "DATA"

  deliversby = ""   # [String] Local Delivery Agent name
  reasontext = ""   # [String] Error reason
  issuedcode = argvs["diagnosticcode"].downcase

  LocalAgent.each_key do |e|
    # Find a lcoal delivery agent name from the entire message body
    next if LocalAgent[e].none? { |a| issuedcode.include?(a) }
    deliversby = e; break
  end
  return "" if deliversby.empty?

  MessagesOf[deliversby].each_key do |e|
    # The key is a bounce reason name
    next if MessagesOf[deliversby][e].none? { |a| issuedcode.include?(a) }
    reasontext = e; break
  end

  reasontext = "mailererror" if reasontext.empty?
  return reasontext
end