Does anybody know if I can trick the alias file to produce an error to
the sending SMTP server?
This works well with virtusertable, but I am not sure about the
/etc/aliases format.
Something like this:
user: error: nouser 550 No such user here
Or, is there another handy way to cause an error to the sending server
for a username that actually exists but should not get mailed.
Thanks,
Hannu