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Ontap Autosupport fails to send to SMTP due to network routing issues

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Category:
ontap-9
Specialty:
CORE
Last Updated:

Applies to

  • Ontap 9.x
  • Autosupport

Issue

  • The AutoSupport history shows repeated transmission failures due to timeouts.

CLUSTER01::> system node autosupport history show -node * -fields node,seq-num,destination,last-update,status,error
node             seq-num destination last-update        status       error
---------------- ------- ----------- ------------------ ------------ -------------------
CLUSTER01-01     7098    smtp        2/26/2026 13:41:09 transmitting Timeout was reached
CLUSTER01-01     7098    http        2/26/2026 13:37:09 ignore
CLUSTER01-01     7098    noteto      2/26/2026 13:35:01 ignore
  • Running an AutoSupport connectivity check shows SMTP connectivity failure:

CLUSTER01::*>  autosupport check show-details -node CLUSTER01-01
Category: smtp
Component: mail-server
Status: failed
Detail: SMTP connectivity check failed for destination:
203.0.113.25:25. Error: Timeout was reached when connecting to the server - '203.0.113.25:25'
Corrective Action: Possible network configuration issue. Ensure that you have network connectivity.
  • However, when performing a manual connectivity test from the node using the systemshell, the SMTP server "203.0.113.25 25"  is reachable, and the connection is successful:

CLUSTER01::*> set d
CLUSTER01::*> system node systemshell -node CLUSTER01-02 -command telnet 203.0.113.25 25
Trying 203.0.113.25...
Connected to smtp-gateway.example.com.
220 smtp-gateway.example.com ESMTP

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