AH HA! Looks like in 2007, I opened a ticket and dreamhost responded, and that response is what triggered me to put the TXT record:
On Mon, 12 Nov 2007, you wrote:
I have email@example.com forwarding to firstname.lastname@example.org. However, hotmail
replies that the email appears to be spam. See attachment.
Hotmail has been recently blocking many of our mx servers due to spam
that gets forwarded from them. That being said, the following steps have
seemed to legitimize domains ,despite hotmail's general leariness to our
servers due to their filters only looking at the last relay stamp on
mails, and not at the origin address , to hotmail's filters, though not
in all cases:
First you want to make sure you have both a postmaster@ and an
email@example.com email address.
Second you will want to add an SPF record for your domain. Visit the
Manage Domains page in Control Panel, and click the "DNS" link for the
domain you wish to edit. You'll be taken to the domain management page.
In the "Add a new DNS record..." box use these settings.
Value: v=spf1 ip4:184.108.40.206/24 ip4:220.127.116.11/24 ip4:18.104.22.168/24
ip4:22.214.171.124/24 ip4:126.96.36.199/24 mx ~a
Then click the Add Record Now button.
As I said, this does guarantee that hotmail will allow mail to forward.
We are working to get meaningful conversation with them to get our
So, I guess the IPs need to be updated.
I see that
C:\Users\gabe>nslookup -query=mx misura.org
misura.org MX preference = 0, mail exchanger = mx1.sub4.homie.mail.dreamhost.com
misura.org MX preference = 0, mail exchanger = mx2.sub4.homie.mail.dreamhost.com
So I can add those 2 IP's to the SPF..
C:\Users\gabe>nslookup -query=txt misura.org
misura.org text =
"v=spf1 ip4:188.8.131.52/24 ip4:184.108.40.206/24 ip4:220.127.116.11/24 ip4:6
18.104.22.168/24 ip4:22.214.171.124/24 ip4:126.96.36.199 ip4:188.8.131.52 ~all"
Are there more IPs I need? Should I get rid of those other IPs?