[ServerSolutions]

Yes, It's firewall OR network issues. Try to check connection using telnet to smtp.gmail.com on port 587

telnet smtp.gmail.com 587

[kateparkers]

look like

[24x7servermanag]

Looks like firewall issue.

[alex]

have you checked the firewall rules?

[morcano]

Hello. I have a problem.
When i sending email via smtp.google.com i get error:

Connection could not be established with host smtp.gmail.com [Network is unreachable #101]

My email settings:
MAIL_DRIVER=smtp
MAIL_HOST=smtp.gmail.com
MAIL_PORT=587
MAIL_USERNAME=***
MAIL_PASSWORD=***
MAIL_ENCRYPTION=tls