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ONTAP AutoSupport fails when Intercluster LIFs are up

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CORE
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Applies to

ONTAP v9.xx

Issue

  • AutoSupport messages fail to send when intercluster LIFs are up.
  • Intercluster LIFs (e0M) are unable to reach DNS servers or the mail host.
  • Pings to DNS (xx.xx.xx.xx/xx) and mail host (e.g., xx.xx.xx.xx/xx) from e0M fail when intercluster LIFs are up.
  • When intercluster LIFs are down, AutoSupport works as expected.
  • Disabling intercluster LIFs restores connectivity for e0M to DNS and mail host.
  • Packet traces show no SYN/ACK response for SMTP port 25 when intercluster LIFs are up.
  • Associated network ports are not blocked
  • Log Output / Symptoms:

system node autosupport check show-details -node *

Category: smtp Component: mail-server

Status: failed Detail: SMTP connectivity check failed for destination: company.example:25.

Error: Timeout was reached when connecting to the server-'company.example:25'

CorrectiveAction: network configuration issue. Ensure that you have network connectivity

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