can not send emails out of the system . A few odd things:
Mac OS X 10.11.6. El Capitan Server 5.1.7Lasso 9.3.1-4Server in datacentre with IP address (URL) with NAT address (actual server ip)
- it did work all right for a long while. Out of the blue it stopped sending out email. - test email works all fine  (LUX> Server Manager > SMT Config)- same settings in the instance used to be ok- one day it decided to stop with this message " Failed to connect to host "smtp.example.com"
I do not get why it works fine with the test email and stopped working via the instance. 
I used to use Lasso a mail server, it works all fine but then it stopped. Even when trying to connect to a remote smtp server it fails.
Any any idea ? 
Thanks

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