Skip to main content
NetApp Response to Russia-Ukraine Cyber Threat
In response to the recent rise in cyber threat due to the Russian-Ukraine crisis, NetApp is actively monitoring the global security intelligence and updating our cybersecurity measures. We follow U.S. Federal Government guidance and remain on high alert. Customers are encouraged to monitor the Cybersecurity and Infrastructure Security (CISA) website for new information as it develops and remain on high alert.

NetApp KCS Award

NetApp Knowledge Base

AutoSupport delivery fails due to DNS - Couldn't resolve host in ONTAP 9 and earlier

Last Updated:

Applies to

  • AutoSupport
  • ONTAP 9
  • Clustered Data ONTAP 8
  • SMTP
  • HTTP(s)


Nodes could not connect to the DNS servers and could not resolve any of the following host names.

  • your mailhost server (if using SMTP)
  • your proxy server (if configured)

Verify: (3 options)

  1. Run command  Autosupport history show 

::>system autosupport history show::>system autosupport history show -node <node_name>  -fields node,seq-num,status,error,destination

Last Error reported :

Couldn't resolve host name.

  1. Testing connectivity from the command line

::> set advanced

::> system node autosupport check show-details -node node_name


Category: smtp
Component: mail-server
Status: failed
Detail: SMTP connectivity check failed for destination:
mailhost. Error: Could not resolve host - 'mailhost'
Corrective Action: Check the hostname of the SMTP server

  1. Review the notifyd logs.

::> node run -node (node-name) -command rdfile /etc/log/mlog/notifyd.log

Notified logs display the following errors:

Attempting to deliver ASUP using PUT)
0000001b.000723c6 04233027 Fri Feb 27 2015 02:27:01 -05:00 [kern_notifyd:info:829] (category:
829:1528:deliver) (emittime: 2/27/2015 02:27:01) (message: getaddrinfo(3) failed for
0000001b.000723c7 04233027 Fri Feb 27 2015 02:27:01 -05:00 [kern_notifyd:info:829] (category:
829:1528:deliver) (emittime: 2/27/2015 02:27:01) (message: Couldn't resolve host
0000001b.000723c8 04233027 Fri Feb 27 2015 02:27:01 -05:00 [kern_notifyd:info:829] (category:
829:1528:deliver) (emittime: 2/27/2015 02:27:01) (message: Closing connection #0)

ERR: AutoSupport::StatusCheck:Connectivity check to HTTP PUT destination failed (Couldn't resolve host name) with root CA path: /mroot/etc/vserver_4294967295/certificates/ssl/serverCa

Scan to view the article on your device

Registered NetApp customers get unlimited access to our dynamic Knowledge Base.

New authoritative content is published and updated each day by our team of experts.

Current Customer or Partner?

Sign In for unlimited access

New to NetApp?

Learn more about our award-winning Support