Wildcard MX Entries

networking

Hi all,

Has anyone had any luck entering a MX record with a wildcard into the Linode DNS panel?

When I try to enter a subdomain of "" or ".pagerduty.com", I get this error: "You have entered an invalid subdomain hostname."

Basically, I'm trying to use Linode to put a record like this into my DNS record:

Don't use a wildcard, just leave the field blank. You'll end up with:

pagerduty.com.     IN     MX     10 mail.pagerduty.com.

These may be useful: http://rscott.org/dns/mx.html , http://tools.ietf.org/html/rfc1912#section-2.7

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