The message is pending in the queue 'SERVER\Unreachable'. The last error was 'A matching connector cannot be found to route the external recipient'.

Hello all,

I am doing a lab at home... and i installed and partially configured Exchange 2013.

Now i have second problem when sending a e-mail:

"The message is pending in the queue 'SERVER\Unreachable'. The last error was 'A matching connector cannot be found to route the external recipient'."

I send message to my self ( localy on server... So basicly i send from email@domain.com to email@domain.com .

And it said that error in message trace...

Why does exchange trying to send External e-mail since i sent it internally? Is there any connections with networking or DNS / DHCP?

Thanks in advance for answers!