That's an issue with shared hosting and cPanel. Most of those servers are configured so terribly that they'll probably mark their own outgoing email as spam if they set up their spam filter any stricter.

I don't like black holes, they're impossible to debug when something goes wrong. All email should be either rejected at the SMTP level or delivered to a mailbox (even if it's the spam folder) so there's a clear indication of what happened to it.