I installed qmail and I am able to send and receive emails when i add the address within the network in the /var/qmail/control/smtproutes file.
Say I create a virtual domain in my windows machine as abc.com and add "abc.com:" in smtproutes, then email delivery is successful.
But when i directly send emails to outside domain, i get error " Sorry,_I_wasn't_able_to_establish_an_SMTP_connection".
Is this a firewall issue? What could I be missing?