I have found that filtering mail that doesn't have PTR (Reverse) is not a good idea. Most service providers don't give you the delegation for the reverse so therefore you have to contact them to set it for you in their servers. This is mostly because most people just don't understand DNS forwards enough and reverse can be a bit more tricky. Just because you may have PTR records in your DNS server does not mean you have the delegation for that IP or range. In otherwords, it will only be effective for users on your own network, the Internet itself will not know about it.
If you decide to block by no Rdns, you should expect problems getting mail from some of the medium to lower level legitimate post offices. In fact, I would bet better than half of the Qmail users here don't have their Rdns setup correctly and would be blocked by no Rdns filters. Phil -----Original message----- From: "Eric \"Shubes\"" [EMAIL PROTECTED] Date: Tue, 15 Jan 2008 12:49:42 -0500 To: qmailtoaster-list@qmailtoaster.com Subject: Re: [qmailtoaster] can't send test message to myself > Cameron wrote: > > Could the strange hostname be causing the problem or is the PTR record? > > I think the PTR record is causing the problem. I'd get rid of it. > a) I don't believe that you need a ptr record > b) MX records *must* point to type A records, *not* PTR records. > > I'm not familiar with register.com's web pages, so it's hard for me to tell > you specifically what's wrong. In general terms, you need a type A record > for your host, and an MX record which points to that host's type A record. > > HTH > -- > -Eric 'shubes' > > --------------------------------------------------------------------- > QmailToaster hosted by: VR Hosted <http://www.vr.org> > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > --------------------------------------------------------------------- QmailToaster hosted by: VR Hosted <http://www.vr.org> --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
