I migrated all my 3 domains from Ubuntut 14 to CentOS 7 to solve my email and ssl problems.
Evriting is perfect whit te email, the mail server is now sending and receiving email whit each domain mail. 1.com, mail. 2.com mail. 3.com.
But now I'm facing different issue.
Ftom time to time the server drops the connection randomly. 
Any hint or fix will be apceciated thank you
