[Discuss] Help with possible email/DNS setup issue?

[blu at cyberpear.com (James Cassell)]

On Fri, Apr 5, 2019, at 5:05 PM, Daniel Barrett wrote:
> 
> tl;dr: A domain (kidreviewz.com) has a separate mail server
> (mail.kidreviewz.com). I can send mail to info at kidreviewz.com without
> error, but MailChimp insists that email to the domain bounces. Is
> something misconfigured on my end?
> 
> Details: My nephew's domain, kidreviewz.com, is hosted on a Linode
> server, 45.79.68.11. Email for the domain is handled by a different
> server, mail.kidreviewz.com (72.29.78.191). This setup seems to work:
> I can send email from anyplace to info at kidreviewz.com and it arrives
> at the right destination.
> 
> Here's the problem: My nephew wants to run an email announcement list
> on MailChimp so the outgoing email address appears as info at kidreviewz.com.
> MailChimp of course needs to verify that he owns that address, so they
> must send a "verification message" to it. Within 2 seconds of sending,
> MailChimp reports failure: "We're having some trouble delivering to
> info at kidreviewz.com. Looks like the verification email might've
> bounced."
> 
> Rather than blame MailChimp, I'd rather blame me. Did I overlook
> something in the DNS (or other) setup for kidreviewz.com? I am no DNS
> expert.
> 
> Here's some output from dig:
> 
> $ dig kidreviewz.com
> ; <<>> DiG 9.10.3-P4-Ubuntu <<>> kidreviewz.com
> ;; global options: +cmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 52057
> ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 3
> 
> ;; OPT PSEUDOSECTION:
> ; EDNS: version: 0, flags:; udp: 4096
> ;; QUESTION SECTION:
> ;kidreviewz.com.                        IN      A
> 
> ;; ANSWER SECTION:
> kidreviewz.com.         7931    IN      A       45.79.68.11
> 
> ;; AUTHORITY SECTION:
> kidreviewz.com.         79931   IN      NS      ns1036.dizinc.com.
> kidreviewz.com.         79931   IN      NS      ns1037.dizinc.com.
> 
> ;; ADDITIONAL SECTION:
> ns1036.dizinc.com.      7630    IN      A       72.29.78.192
> ns1037.dizinc.com.      7630    IN      A       72.29.78.193
> 
> ;; Query time: 1 msec
> ;; SERVER: 127.0.1.1#53(127.0.1.1)
> ;; WHEN: Fri Apr 05 16:43:01 EDT 2019
> ;; MSG SIZE  rcvd: 140
> 
> 
> $ dig -t mx kidreviewz.com
> ; <<>> DiG 9.10.3-P4-Ubuntu <<>> -t mx kidreviewz.com
> ;; global options: +cmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4150
> ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 4
> 
> ;; OPT PSEUDOSECTION:
> ; EDNS: version: 0, flags:; udp: 4096
> ;; QUESTION SECTION:
> ;kidreviewz.com.                        IN      MX
> 
> ;; ANSWER SECTION:
> kidreviewz.com.         8380    IN      MX      0 mail.kidreviewz.com.
> 

Just a guess, but maybe they don't like priority 0? I see gmail has 5, Yahoo has 1.

V/r,
James Cassell


> ;; AUTHORITY SECTION:
> kidreviewz.com.         79914   IN      NS      ns1036.dizinc.com.
> kidreviewz.com.         79914   IN      NS      ns1037.dizinc.com.
> 
> ;; ADDITIONAL SECTION:
> mail.kidreviewz.com.    14095   IN      A       72.29.78.191
> ns1036.dizinc.com.      7613    IN      A       72.29.78.192
> ns1037.dizinc.com.      7613    IN      A       72.29.78.193
> 
> ;; Query time: 1 msec
> ;; SERVER: 127.0.1.1#53(127.0.1.1)
> ;; WHEN: Fri Apr 05 16:43:18 EDT 2019
> ;; MSG SIZE  rcvd: 161
> 
> 
> Thank you very much for any insights.
> 
> --
> Dan Barrett
> dbarrett at blazemonger.com
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