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 the domain part (Right hand side of "@" sign) of the 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 the 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() method returns the fixed string "hostunknown".

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

"match(string)"

match() method 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::Fact)"

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