Cant Change mail server host name after installment ???

[tchubb]

hi
i am trying to chnage the hostname of my email server because hotmail treats it as spam because its name is locahost.localdomain

i ran
postconf -e 'smtpd_sasl_local_domain = server1.greenlight-webhosting.co.uk'
and checked the man.cf and its change but telnet says it ant !!help!! i have tryed restarting the sevices

help please

[till]

The setting smtpd_sasl_local_domain is is not the setting that postfix uses as outgoing domain.

Please open the file /etc/postfix/main.cf with a editor an change the settings, mydomain, myhostname and myorigin.