I open Zoho account, pay subscription etc. 

I verify domain, create email aliases like info@example.com, admin@example.com and ...

Everything is configured, MX,SPF,DKIM are valid.

I try to send email to one of my domain and one of the email alias - for example info@example.com 

I only see in postfix queue:

(lost connection with mx3.zoho.eu[31.186.243.166] while receiving the initial server greeting - info@example.com

Right now after sending newsletter I have hundreds of thousands email in postfix queue with that kind of information. 

Why You do not accept emails for my account?