Overview
The error indicates that Send Email Action has failed to send an email because being unable to connect to SMTP server.
Cause
Possible cause is either incorrect SMTP server address or wrong username and password, if authentication is necessary. Some antivirus and firewall software can block connection to SMTP server as well.
Note
Error message An established connection was aborted by the software in your host machine indicates that connection might be blocked by firewall application. Read more on how to verify connection with SMTP server.
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