You shouldn't use "local" as a domain because it's reserved for avahi.
This is just a test-VM without any network access. But using any other
TLD it is the same problem.
Check/set in main.cf: mydomain, myorigin, myhostname, mydestination
I know this parameters;
>> I know, I can set "myhostname", but why isn't postfix getting
>> this by itself?
But shouldn't postfix get the correct value by itself? "hostname -f"
prints the correct hostname and domain. And this command should also use
gethostname(), like postfix (at least the comments in the config says that).
