NAME

       Sisimai::SMTP::Error - SMTP Errors related utilities

SYNOPSIS

           use Sisimai::SMTP::Error;
           print Sisimai::SMTP::Error->is_permanent('SMTP error message');
           print Sisimai::SMTP::Error->soft_or_hard('userunknown', 'SMTP error message');

DESCRIPTION

       Sisimai::SMTP::Error provide method to check an SMTP errors.

CLASS METHODS

   "is_permanent(String)"
       "is_permanent()" checks the given string points an permanent error or not.

           print Sisimai::SMTP::Error->is_permanent('5.1.1 User unknown'); # 1
           print Sisimai::SMTP::Error->is_permanent('4.2.2 Mailbox Full'); # 0
           print Sisimai::SMTP::Error->is_permanent('2.1.5 Message Sent'); # undef

   "soft_or_hard(String, String)"
       "soft_or_hard()" returns string 'soft' if given bounce reason is a soft bounce.  When the
       reason is a hard bounce, this method returns 'hard'. If the return value is an empty
       string, it means that returned email may not be a bounce.

           print Sisimai::SMTP::Error->soft_or_hard('userunknown', '5.1.1 No such user');   # 'hard'
           print Sisimai::SMTP::Error->soft_or_hard('mailboxfull');                         # 'soft'
           print Sisimai::SMTP::Error->soft_or_hard('vacation');                            # ''

AUTHOR

       azumakuniyuki

COPYRIGHT

       Copyright (C) 2016-2018,2020,2021 azumakuniyuki, All rights reserved.

LICENSE

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