On Wed, 2015-07-29 at 09:02 -0700, Marc Perkel wrote: > Just wondering. > > I'm thinking about creating an RBL to block email addresses. But you > can't use an @ in a hostname for lookups. So - is there a standard > RBL > format for email addresses or do I need to just make something up? > How would the lookup work? If it uses a Perl regex, don't forget that you can simply escape the @ with a backslash and if it uses an SQL lookup you should be using prepared statements and the @ should be treated as just another character.
Martin
