Connection refused when trying to relay mails through postfix

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Environment

SUSE Linux Enterprise Server 11

SUSE Linux Enterprise Server 10

Situation

Connection refused when trying to relay

Cannot relay email through postfix

Resolution

Open the /etc/postfix/main.cf file
Edit the inet_interfaces setting from localhost to all
Restart postfix by rcpostfix restart

Cause

Postfix was only listening on the localhost instead of all interfaces of the server

Disclaimer

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