So with Comodo Positive SSL I AM able to send email in SMTP Mailer Wordpress, if as I do today remove Positive SSL and Install Let’s Encrypt as you can see from the screen I receive error.
I do not why and where is the issue. I was thinking that was a Let’s Encrypt issue…
So I gone immediately back to Positive SSL as if the certificate create mail issue I start to having issue with Wordpress, OsTicket, etc.
For now I have more than one year of validity for the Positive SSL but in future when this certificate expire I will be able to move to the Let’s Encrypt certificate so I can reduce cost… as I AM not into business and I have no money entrace is expensive pay VPS, Panel and also SSL also if this issue is solved many user can have benefit of this… I AM asking where the issue can be, if is my VPS Control Panel Webuzo who has integrated Let’s Encrypt or where the issue can be Thanks