[Bug 242383] Re: default postfix config creates backscatter

[Michael Flaig]

mydestination should be set to the hostname of the machine or any domain it accepts mail for and serves it's mailboxes local
If postfix is just the relay for this domain you should set relay_domains and not mydestination

IMHO, there should be no reason for setting mydestination and relay_domains to the same value. Did I miss something?
What is relay_domains = $mydestination then good for?

To Ryan:
In the old days you also sent mail from one host to the any other not using central mailservers. You sent mail to the the_user at the.box.university.org

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default postfix config creates backscatter
https://bugs.launchpad.net/bugs/242383
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