NAME

       Sisimai::Reason::Filtered - Bounce reason is "filtered" or not.

SYNOPSIS

           use Sisimai::Reason::Filtered;
           print Sisimai::Reason::Filtered->match('550 5.1.2 User reject');   # 1

DESCRIPTION

       Sisimai::Reason::Filtered checks the bounce reason is "filtered" or not. This class is
       called only Sisimai::Reason class.

       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

CLASS METHODS

   "text()"
       "text()" returns string: "filtered".

           print Sisimai::Reason::Filtered->text;  # filtered

   "match(string)"
       "match()" returns 1 if the argument matched with patterns defined in this class.

           print Sisimai::Reason::Filtered->match('550 5.1.2 User reject');   # 1

   "true(Sisimai::Data)"
       "true()" returns 1 if the bounce reason is "filtered". The argument must be Sisimai::Data
       object and this method is called only from Sisimai::Reason class.

AUTHOR

       azumakuniyuki

COPYRIGHT

       Copyright (C) 2014-2018,2021 azumakuniyuki, All rights reserved.

LICENSE

       This software is distributed under The BSD 2-Clause License.