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- edit /etc/mailname
- replace the hostname
- do the same with /etc/postfix/header_checks. It the file doesn't exist check the following JIRA issue: BLUE-689
There will also be references to the old hostname in /etc/postfix/generic and /etc/postfix/main.cf. I don't know yet if we simply need to edit those files or do something else.
Change the bind settings
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