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AutoSupport SMTP fails to send intermittently due to SMTP 550 5.7.0 Message Size Violation

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Category:
ontap-9
Specialty:
core
Last Updated:

Applies to

  • ONTAP 9
  • AutoSupport (ASUP)
  • SMTP

Issue

  • Unable to send ASUP that are WEEKLY  and type all using the system node autosupport invoke command.
  • Smaller ASUPs (type: test) are sent successfully and delivered via SMTP
  • SMTP transmission of the Weekly ASUP fails
Error: transmission-failed
EMS logs

[cluster-01 asup.smtp.drop:error]: AutoSupport mail (HA Group Notification from cluster-01 (EMS mgmtgwd.vreport.nodesUnreachable) ERROR) was not sent. The system will drop the message.

  • SMTP configuration on the Cluster is correct:
::> system node autosupport check show-details
Node: cluster01-n01
 
Category: http-https
Component: http-put-destination
Status: ok
Detail: Successfully connected to:
https://support.netapp.com/put/AsupPut/.
 
Component: http-post-destination
Status: ok
Detail: Successfully connected to:
https://support.netapp.com/asupprod/post/1.0/postAsup.
 
Category: smtp
Component: mail-server
Status: ok
Detail: Successfully connected to: mailhost.domain.com
 
Notifyd.log:
  • SMTP server rejects the message due to its size
Response: 550 5.7.0 Message Size Violation\r\n
Response code: Requested action not taken: mailbox unavailable (550)
Response parameter: 5.7.0 Message Size Violation
  • HTTPS transmission for all ASUP types is successful

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