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Error "Can't send command to SMTP host" Sending Subscriptions from Tableau Server


Published: 09 May 2014
Last Modified Date: 06 Nov 2015

Issue

When sending email subscriptions, the following error may occur:

Can't send command to SMTP host

Additionally, the following errors might appear in the Tableau Server logs and Windows Event Viewer logs:

Can't send command to SMTP host; nested exception is: javax.net.ssl.SSLHandshakeException
PKIX path validation failed: java.security.cert.CertPathValidatorException: timestamp check failed
java.security.cert.CertificateExpiredException: NotAfter: <date and time here>

 

Environment

  • Tableau Server
  • SMTP server

Resolution

Update the SSL certificate stored on the SMTP server.

Cause

The SSL certificate on the SMTP server has expired, effective from the date and time seen in the error message.
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