> 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).