Messages not seen by a user who was +r -ed against spammers.
It was explained to me: If you set up your client properly then yes it identifies you. The best and easiest is to use your nickserv password as server password. It works well and every irc client supports that.
I had simply been missing the password in my server registration for irc.freenode.net
In LimeChat's case (a Mac OS X IRC client) it had a password field for the username, as well as the server, so i'm trying that first.