Provided by: libsisimai-perl_5.0.1-1_all 
NAME
Sisimai::Reason - Detect the bounce reason
SYNOPSIS
use Sisimai::Reason;
DESCRIPTION
Sisimai::Reason detects the bounce reason from the content of Sisimai::Fact object as an argument of
get() method. This class is called only Sisimai::Fact class.
CLASS METHODS
"get(Sisimai::Fact Object)"
get() detects the bounce reason.
"anotherone(Sisimai::Fact object)"
anotherone() is a method for detecting the bounce reason, it works as a fall back method of get() and
called only from get() method.
match() detects the bounce reason from given text as a error message.
"match(String)"
match() is a method for detecting the bounce reason from the string given as an argument of the method.
However, this method is low analytical precision.
LIST OF BOUNCE REASONS
"Sisimai::Reason-"get()> detects the reason of bounce with parsing the bounced messages. The following
reasons will be set in the value of "reason" property of Sisimai::Fact instance.
"blocked"
This is the error that SMTP connection was rejected due to a client IP address or a hostname, or the
parameter of "HELO/EHLO" command. This reason has added in Sisimai 4.0.0.
<kijitora@example.net>:
Connected to 192.0.2.112 but my name was rejected.
Remote host said: 501 5.0.0 Invalid domain name
"contenterror"
This is the error that a destination mail server has rejected email due to header format of the email
like the following. Sisimai will set "contenterror" to the reason of email bounce if the value of Status:
field in a bounce email is "5.6.*".
- 8 bit data in message header
- Too many “Received” headers
- Invalid MIME headers
... while talking to g5.example.net.:
>>> DATA
<<< 550 5.6.9 improper use of 8-bit data in message header
554 5.0.0 Service unavailable
"delivered"
This is NOT AN ERROR and means the message you sent has delivered to recipients successfully.
Final-Recipient: rfc822; kijitora@neko.nyaan.jp
Action: delivered
Status: 2.1.5
Remote-MTA: dns; home.neko.nyaan.jp
Diagnostic-Code: SMTP; 250 2.1.5 OK
"exceedlimit"
This is the error that a message was rejected due to an email exceeded the limit. The value of D.S.N. is
5.2.3. This reason is almost the same as "MesgTooBig", we think.
... while talking to mx.example.org.:
>>> MAIL From:<kijitora@example.co.jp> SIZE=16600348
<<< 552 5.2.3 Message size exceeds fixed maximum message size (10485760)
554 5.0.0 Service unavailable
"expired"
This is the error that delivery time has expired due to connection failure or network error and the
message you sent has been in the queue for long time.
"feedback"
The message you sent was forwarded to the sender as a complaint message from your mailbox provider. When
Sismai has set "feedback" to the reason, the value of "feedbacktype" is also set like the following
parsed data.
"filtered"
This is the error that an email has been rejected by a header content after SMTP DATA command. In
Japanese cellular phones, the error will incur that a sender's email address or a domain is rejected by
recipient's email configuration. Sisimai will set "filtered" to the reason of email bounce if the value
of Status: field in a bounce email is 5.2.0 or 5.2.1.
This error reason is almost the same as UserUnknown.
... while talking to mfsmax.ntt.example.ne.jp.:
>>> DATA
<<< 550 Unknown user kijitora@ntt.example.ne.jp
554 5.0.0 Service unavailable
"hasmoved"
This is the error that a user's mailbox has moved (and is not forwarded automatically). Sisimai will set
"hasmoved" to the reason of email bounce if the value of Status: field in a bounce email is 5.1.6.
<kijitora@example.go.jp>: host mx1.example.go.jp[192.0.2.127] said: 550 5.1.6 recipient
no longer on server: kijitora@example.go.jp (in reply to RCPT TO command)
"hostunknown"
This is the error that a domain part (Right hand side of @ sign) of a recipient's email address does not
exist. In many case, the domain part is misspelled, or the domain name has been expired. Sisimai will set
"hostunknown" to the reason of email bounce if the value of Status: field in a bounce mail is 5.1.2.
Your message to the following recipients cannot be delivered:
<kijitora@example.cat>:
<<< No such domain.
"mailboxfull"
This is the error that a recipient's mailbox is full. Sisimai will set "mailboxfull" to the reason of
email bounce if the value of Status: field in a bounce email is 4.2.2 or 5.2.2.
Action: failed
Status: 5.2.2
Diagnostic-Code: smtp;550 5.2.2 <kijitora@example.jp>... Mailbox Full
"mailererror"
This is the error that a mailer program has not exited successfully or exited unexpectedly on a
destination mail server.
X-Actual-Recipient: X-Unix; |/home/kijitora/mail/catch.php
Diagnostic-Code: X-Unix; 255
"mesgtoobig"
This is the error that a sent email size is too big for a destination mail server. In many case, There
are many attachment files with email, or the file size is too large. Sisimai will set "mesgtoobig" to the
reason of email bounce if the value of Status: field in a bounce email is 5.3.4.
Action: failed
Status: 553 Exceeded maximum inbound message size
"networkerror"
This is the error that SMTP connection failed due to DNS look up failure or other network problems. This
reason has added in Sisimai 4.1.12.
A message is delayed for more than 10 minutes for the following
list of recipients:
kijitora@neko.example.jp: Network error on destination MXs
"norelaying"
This is the error that SMTP connection rejected with error message "Relaying Denied".
... while talking to mailin-01.mx.example.com.:
>>> RCPT To:<kijitora@example.org>
<<< 554 5.7.1 <kijitora@example.org>: Relay access denied
554 5.0.0 Service unavailable
"notaccept"
This is the error that a destination mail server does ( or can ) not accept any email. In many case, the
server is high load or under the maintenance. Sisimai will set "notaccept" to the reason of email bounce
if the value of Status: field in a bounce email is 5.3.2 or the value of SMTP reply code is 556.
"onhold"
Sisimai will set "onhold" to the reason of email bounce if there is no (or less) detailed information
about email bounce for judging the reason.
"policyviolation"
This is the error that a policy violation was detected on a destination mail server. This reason has been
divided from "securityerror" at Sisimai 4.22.0.
570 5.7.7 Email not accepted for policy reasons
"rejected"
This is the error that a connection to destination server was rejected by a sender's email address
(envelope from). Sisimai set "rejected" to the reason of email bounce if the value of Status: field in a
bounce email is 5.1.8 or the connection has been rejected due to the argument of SMTP MAIL command.
<kijitora@example.org>:
Connected to 192.0.2.225 but sender was rejected.
Remote host said: 550 5.7.1 <root@nijo.example.jp>... Access denied
"securityerror"
This is the error that a security violation was detected on a destination mail server. Depends on the
security policy on the server, a sender's email address is camouflaged address. Sisimai will set
"securityerror" to the reason of email bounce if the value of Status: field in a bounce email is "5.7.*".
Status: 5.7.0
Remote-MTA: DNS; gmail-smtp-in.l.google.com
Diagnostic-Code: SMTP; 552-5.7.0 Our system detected an illegal attachment on your message. Please
"spamdetected"
This is the error that the message you sent was rejected by "spam" filter which is running on the remote
host. This reason has added in Sisimai 4.1.25.
Action: failed
Status: 5.7.1
Diagnostic-Code: smtp; 550 5.7.1 Message content rejected, UBE, id=00000-00-000
Last-Attempt-Date: Thu, 9 Apr 2008 23:34:45 +0900 (JST)
"suspend"
This is the error that a recipient account is being suspended due to unpaid or other reasons.
"syntaxerror"
This is the error that a destination mail server could not recognize SMTP command which is sent from a
sender's MTA. This reason has been added at Sisimai v4.17.0.
- 503 Improper sequence of commands
- 504 Command parameter not implemented
"systemerror"
This is the error that an email has bounced due to system error on the remote host such as LDAP
connection failure or other internal system error.
<kijitora@example.net>:
Unable to contact LDAP server. (#4.4.3)I'm not going to try again; this
message has been in the queue too long.
"systemfull"
This is the error that a destination mail server's disk (or spool) is full. Sisimai will set
"systemfull" to the reason of email bounce if the value of Status: field in a bounce email is 4.3.1 or
5.3.1.
"toomanyconn"
This is the error that SMTP connection was rejected temporarily due to 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)
"userunknown"
This is the error that a local part (Left hand side of @ sign) of a recipient's email address does not
exist. In many case, a user has changed internet service provider, or has quit company, or the local part
is misspelled. Sisimai will set "userunknown" to the reason of email bounce if the value of Status: field
in a bounce email is 5.1.1, or connection was refused at SMTP RCPT command, or the contents of
Diagnostic-Code: field represents that it is unknown user.
<kijitora@example.co.jp>: host mx01.example.co.jp[192.0.2.8] said:
550 5.1.1 Address rejected kijitora@example.co.jp (in reply to
RCPT TO command)
"undefined"
Sisimai could not detect the error reason. In many case, error message is written in non-English or there
are no enough error message in a bounce email to decide the reason.
"vacation"
This is the reason that the recipient is out of office. The bounce message is generated and returned from
auto responder program. This reason has added in Sisimai 4.1.28
"virusdetected"
This is the error that an email was rejected by a virus scanner at a destination mail server. This reason
has been divided from "securityerror" at Sisimai 4.22.
Your message was infected with a virus. You should download a virus
scanner and check your computer for viruses.
Sender: <sironeko@libsisimai.org>
Recipient: <kijitora@example.jp>
SEE ALSO
Sisimai::ARF <http://tools.ietf.org/html/rfc5965> <https://libsisimai.org/en/reason/>
AUTHOR
azumakuniyuki
COPYRIGHT
Copyright (C) 2014-2023 azumakuniyuki, All rights reserved.
LICENSE
This software is distributed under The BSD 2-Clause License.
perl v5.38.2 2024-03-03 Sisimai::Reason(3pm)