On Wednesday 16 December 2009, Philip A. Prindeville wrote:
Even if there's no website, there needs to be an "A" record. Since it's a valid domain. I would guess they're trying to set up an email-only domain and some mail servers don't like that. Just leave the "parked" website up and running at your registrar and that might work. OTOH, you might still need to put up a generic "under construction" website to fool the spam- checkers so that the A record and the MX record match.
Why would I need an A record? All mailers should support MXing, right?
As long as my MX points to a name that has a valid A record, I should be golden.
In theory, you don't need an A record. However, some mail servers won't accept email from a domain that doesn't have an A record as an anti-spam measure. Even if the mail server has an A record, it may not be enough.