What does "connection timed out" or "connection timeout" mean?
Posted by Carlos Rios on 17 November 2017 07:02 PM

This indicates the sending email system was not able to connect to the receiving email system.  This could be caused by a misconfigured firewall or failed email system. You will need to examine the email headers of the bounce to determine which system generated the error.  This information is also usually included in the body of the bounce message.

If you need assistance in determining the source of the failure, please contact Support

ERROR: This domain name does not match domain registered in the license key file (, allowed domains:,localhost, please change the product path to match the domain under Admin CP > Settings > General Settings
This product will not work properly unless untill that value is changed.

For more information please contact Kayako support at