Hi, For some reason i cant send and receive emails. I have followed the perfect centos 5 setup ISPconfig mail setup is Postfix /etc/postfix/virtusertable /etc/postfix/local-host-names /var/log/maillog I can connect through pop3 with outlook on the pop3 server locally, and when i try to send an email through this account i receive the following error> The message could not be sent because one of the recipients was rejected by the server. The rejected e-mail address was '[email protected]'. Subject 'test', Account: '192.168.1.67', Server: '192.168.1.67', Protocol: SMTP, Server Response: '554 5.7.1 <[email protected]>: Relay access denied', Port: 25, Secure(SSL): No, Server Error: 554, Error Number: 0x800CCC79 And the [email protected] definitely exists trying to send an email, from my gmail acount, i receive the following error This is an automatically generated Delivery Status Notification Delivery to the following recipient failed permanently: [email protected] Technical details of permanent failure: PERM_FAILURE: SMTP Error (state 13): 550 5.2.0 <[email protected]> No such mailbox whereas i can definitely login through my servers webmail using this [email protected] account. any sugestions please? thanks Patrick