Having trouble to send email in live server using laravel 5.1

Hi I setup a contact form for my website with following configuration using Laravel framework

MAIL_DRIVER=smtp
MAIL_HOST=smtp.netregistry.net
MAIL_PORT=465
MAIL_USERNAME= example@domain.com
MAIL_PASSWORD=******
MAIL_ENCRYPTION=ssl
MAIL_FROM= example@domain.com
MAIL_NAME= name

the above config works fine in my localhost, however when I tried in live server it gives me error

Connection could not be established with host smtp.netregistry.net [Connection refused #111]

I tried to fix it by changing mail server to smtp.gmail.com and even tried port 25, 465, 587 for encryption such as ssl, tls, startTLS none of them worked.

So I contacted hosting providers and asked for help and after 12 days of my struggle to get them address my issue finally come up with

our cloud infrastructure does not allow external smtp connections from our hosting. This means that if you are sending emails from your website you will need to use localhost as the smtp host setting.

so now I tried to change my MAIL_HOST to localhost which gave me error

Connection could not be established with host smtp.netregistry.net [Connection refused #0]

and now they were suggesting something wrong with my script. Any suggestions

via Chebli Mohamed