You should visit the [rfc-ignorant.org...] website to see which of the rules mentioned there caused your domain to appear in their blacklist. The error message you mentioned in your post indicates that your mail server does not accept error bounce messages with an empty from field.

I personally do not know the value of the rfc-ignorant.org database. They have listed large and reputable domains like microsoft.com, cnn.com and godaddy.com because the mailservers of these domains do not accept emails to postmaster@