I did a DNS report on my hosted domain with DH and was pleased to see it passed pretty much everything. There are a few 'info' warnings however so thought I would post here to see if I can get more info..
1 - Your domain does not have an SPF record. This means that spammers can easily send out E-mail that looks like it came from your domain, which can make your domain look bad (if the recipient thinks you really sent it), and can cost you money (when people complain to you, rather than the spammer). You may want to add an SPF record ASAP, as 01 Oct 2004 was the target date for domains to have SPF records in place (Hotmail, for example, started checking SPF records on 01 Oct 2004).
2 - WARNING: One or more of your mailservers does not accept mail to email@example.com. Mailservers are expected by RFC2142 to accept mail to abuse.