I have newly installed zcs-7.2.0_GA_2669.RHEL5_64, inside the Firewall using split DNS. the mail server is working properly, when we are using mails through web mail it's ok, but whenever the mail account is used by any mail client it is getting 554 5.7.1 Relay access denied massage. from the remote network only.
i have ched out in the server the authentication is on and the TLS is uncheck, when i have set the ssl with authentication in outlook it showing
"Your Server does not support connection encryption type you have specified, Try changing the encryption method contact the mail server administrator or Internet Server provider (ISP) for additional assistance."
can any one tell me what's wrong with my Server,