NAME

       Sisimai::Reason::HostUnknown - Bounce reason is "hostunknown" or not.

SYNOPSIS

           use Sisimai::Reason::HostUnknown;
           print Sisimai::Reason::HostUnknown->match('550 5.2.1 Host Unknown');   # 1

DESCRIPTION

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

       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.

CLASS METHODS

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

           print Sisimai::Reason::HostUnknown->text;  # hostunknown

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

           print Sisimai::Reason::HostUnknown->match('550 5.2.1 Host Unknown');   # 1

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

AUTHOR

       azumakuniyuki

COPYRIGHT

       Copyright (C) 2014-2018,2020,2021 azumakuniyuki, All rights reserved.

LICENSE

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