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Support Article

Caught javax.mail.MessagingException cant send command to SMTP



When sending email through the workflow, a message is displayed in the audit (history) of the case:

Error Messages

Caught javax.mail.MessagingException, Cant send command to SMTP host

Steps to Reproduce

Send an email notification from a work object to observe the issue.

Root Cause

Pega attempts to negotiate TLS encryption with a mail server that supports it by default. The mail server supported TLS in this environment; however, Pega was not configured with security information and certificates to properly integrate. 


This issue is resolved through the following Local-change:

Disable the TLS negotiation through the following Dynamic System Setting:

Owning Ruleset: Pega-IntSvcs
Purpose: Email/DisableSecuritySTARTTLS
value: true

Published June 12, 2015 - Updated October 8, 2020

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