Mail::Milter::Module::HeloRawLiteral - milter to check for an IP literal without brackets in HELO

       Todd Vierling, <tv@duh.org> <tv@pobox.com>

       RFC2821:4.1.3 specifies that raw IP addresses may be used in HELO, but only if they are enclosed in
       [square brackets].  Spam engines sometimes forget the brackets, so this milter will catch them.

       Mail::Milter::Module::HeloRawLiteral - milter to check for an IP literal without brackets in HELO

       Mail::Milter::Object

perl v5.36.0                                       2023-01-22             Mail::Milter::M...:HeloRawLiteral(3pm)

           use Mail::Milter::Module::HeloRawLiteral;

           my $milter = new Mail::Milter::Module::HeloRawLiteral();

           my $milter2 = &HeloRawLiteral; # convenience