...
http://wiki2.dovecot.org/FindMailLocation
http://postfix.1071664.n5.nabble.com/mail-transport-unavailable-td60070.html
Inspect Stray mail:
mailq
Read stray mail:
...
sudo postsuper -d 21A5320BEB
Trace:
satre@vm-6114:~$ echo "fra vm til fastlege egentlig endors.no, via satre" | mail satre@endors.no
...