Apple requires missing mx record for Dreamhost discussion list subdomain


I have submitted this question to support, but I thought I would ask here in case someone knows. I manage a Dreamhost discussion list that uses the subdomain which Dreamhost created when I created the listserv. I have registered and can manage the domain at Dreamhost.

I have a list user with an Apple email that can receive list mail but cannot post. Folks with other email providers have no problem. Apple support says that the problem is that the subdomain has no MX record. They are correct about the missing MX record, but the top-level domain does have the correct Dreamhost MX record. For some reason other email providers use the top-level mx record but Apple does not.

I don’t know if Apple is wrong for not using the top-level domain MX record or if Dreamhost should have created a MX record. I have noticed that other mailman hosts do have subdomain MX records. For example, the fine folks have MX records for both their top level domain and the subdomain where they host their discussion lists.

I don’t see a way to add the MX record myself for the subdomain using the Dreamhost control panel. In any case, if the MX record is needed, Dreamhost should create it when the discussion list is created.

I would appreciate any wisdom on this.



I just started having the same issue in recent weeks where Apple is not recognizing our subdomain we run a few discussion groups in. Have you had any luck with fixing this?


Dreamhost support has told me that they have verified the mx record requirement is a real problem other Dreamhost mailing list users are experiencing (so folks cannot post to Dreamhost lists with Apple emails.). Apparently Apple made this change recently, which mystifies Dreamhost support, because Apple not following an email RFC. I believe them, but I am not an expert. That said, I don’t know why Dreamhost couldn’t just add the MX record that Apple requires to list email addresses. At the moment I am waiting to see what happens. As I said in my original post, other mailman list providers (e.g. do this.

Here’s a workaround that might help you. My list email address is, which has the problem since the subdomain doesn’t have the MX record. However, Dreamhost has made some additional “convenience emails” at the top level domain that are also delivered to the list. This top level domain domain does have an MX record, so Apple users can post to You should check, your lists might also have the convenience emails.

I didn’t know these convenience emails existed; a Dreamhost support person told me.


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