Can't Config SMTP server

When i configure the mail server i always get the messages:

Stato test Mail: La mail non puo` essere inviata all`amministratore. Verifica le configurazioni del mail server e la email dell`amministratore

fresh installation of VTENEXTCE 20.04 in an fresh ubuntu server 18.04 php 7.2.


I ve also try to configure the same mail in the admin user (read about it in some old forum post) but same result.

In the mail log of the smtp server i can see just this error :

lost connection after STARTTLS from host...

Seems like i miss something.

Are you sure the port is correct?
These are the defaults:
SMTP AUTH: Port 25 or 587
SMTP SSL: Port 465
SMTP StartTLS: Port 587

Hello,
I am attempting to configure the SMTP Server on my instance as well using a microsoft exchange server. I have set up the user email and it works perfectly but when I set up the smtp server for the CRM I continue to get the Test Mail "Status : Mail could not be sent to the admin user. Please check the admin email address/Server settings" error. I have checked all settings, forums and FAQ's and to be sure the credentials are identical for the user and the SMTP for the CRM. Any other ideas? Thank you very much!

Ciao a tutti,
ho un problema analogo su un'installazione che sto facendo per verificare la bontà del prodotto.

Ho fatto innumerevoli prove provando ad utilizzare anche un server smtp interno... ma il messaggio non cambia.

Ho installato tutti i componenti come da manuale, forse bisogna installare qualche altro componente?

Grazie