Hi all Iam using postfix 2.3 on virual machine cento 5.7 when I send mail from virtual machine to yahoo or gmail I get error
host yahoo.com[98.139.180.149] said: 451 OutgoingFilter Connection timeout [] (in reply to MAIL FROM command)) what may cause this error. Is not ok to test mail server configuration on virtual machine even for sending only cause I don't have mx record for this domain I just test configuration Regards
