SMTP Connection Timeout?

[Vinay Gupta]

I am use WHM , all mail not send, all mail show error "Connection timed out", "retry time not reached for any host for 'gmail.com'"

[Nic Brough -Adaptavist-]

That means what it says - the server is trying to reach the email server, and it's timing out.  You'll need to read the full error message, and correct either the connection settings, or fix the network path from the server to email service.