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I am running my own DNS server using bind, and I have only just noticed the output of host -t mx gmail on any system using my DNS server:

gmail mail is handled by 10 your-dns-needs-immediate-attention.gmail.

Looking at this article from ICANN, it looks like this message means name collisions, however everything in my DNS server seems to be working fine. Also, my domain is home.lan so I don't see how there could be name collisions.

Is this something I should be concerned of?

Update: Note that my lookups do not resolve to 127.0.53.53 like in this question, so I am not sure whether this is really a duplicate. In my environment, resolutions work just fine.

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user1301428
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    gmail is now valid gTLD domain, so you can't use it internally - http://icannwiki.com/.gmail – Marki555 Jun 14 '15 at 22:18
  • @Marki555 understood, but I don't use Gmail internally, the only thing I use is .lan. Also, why does this not happen if I run the host command when I am using the router's DNS? – user1301428 Jun 15 '15 at 05:34
  • Also pdns-recursor on my server returns the same as yours and according to ICANN it is correct. Why did you asked your server for gmail domain then? – Marki555 Jun 15 '15 at 06:05
  • @Marki555 I was configuring Postfix for SMTP delivery to a Gmail address, so while checking if everything was correct I also happened to run that command. What I noticed is that if I use my router's DNS server, I get a list of Gmail FQDN's, but if I use my DNS server, I get that message. To me it doesn't make sense because yes, gmail is indeed handled by my DNS server, that's why I have a DNS server in the first place :D I don't see how this can be a problem though, unless I am completely misunderstanding the message – user1301428 Jun 15 '15 at 07:08
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    No, gmail is not handling email at the .gmail domain, only at gmail.com. Your server does what browsers do - add the .com domain automatically if there are no dots in the domain name. – Marki555 Jun 15 '15 at 08:21
  • @Marki555 hah, I knew it was something this simple XD – user1301428 Jun 15 '15 at 15:09

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