HN Explorer

Ask HN: Is there a Gmail DNS resolver outage happening?

9 points by pmlnr ↗ HN
I got pinged on WhatsApp, that they can't send me emails - this is to my own server that has been happily ticking for quite a while. Tested sending from outlook and gmail - outlook worked, gmail failed with:

    DNS Error: DNS type 'mx' lookup of [domain] responded with code NXDOMAIN Domain name not found: [domain] Learn more at https://support.google.com/mail/?p=BadRcptDomain
Anyone seen this before or experiencing it currently?

4 comments

[ 3.5 ms ] story [ 23.0 ms ] thread
LinuxBender
This this close to what you are seeing?

    dig +short -t mx gmail.com | sort -n
    5 gmail-smtp-in.l.google.com.
    10 alt1.gmail-smtp-in.l.google.com.
    20 alt2.gmail-smtp-in.l.google.com.
    30 alt3.gmail-smtp-in.l.google.com.
    40 alt4.gmail-smtp-in.l.google.com.
pmlnr
Not incoming to gmail; going out to other domains.
LinuxBender
Ah, apologies I misunderstood. Outbound email from gmail appears to work for me. Perhaps google's servers are having trouble reaching the domain you are sending to or maybe a specific cluster you are connecting to are having an issue.

Does your domain look ok in the EDNS tester [1] and in the delegation tester? [2] Refresh the delegation tester a couple times as their timeout is really short.

Edit: I forgot to add the MX toolbox [3]

[1] - https://ednscomp.isc.org/ednscomp?zone=

[2] - https://www.whatsmydns.net/

[3] - https://mxtoolbox.com/

proactivesvcs
I've had some clients contact me because they can't email GMail accounts. They're getting bounces claiming DKIM failures when DKIM is working fine; could be related.