How to get the systemd resolver to resolve local (i.e. unqalified) names?

[Xen]

Tom H schreef op 04-06-2017 13:37:

> It doesn't make sense because root is the default user for units under
> "/{lib,etc}/systemd/system/" but if you say that it didn't work, it
> didn't work.

I know, and everything else (simple commands such as tee) did work, but 
mail didn't.

It also didn't give an error.

I just got no emails.

But it's rather hard to put multiline commands on a ExecStart line and I 
didn't want to use a script ;-).

So the "mail" command started working as soon as I used "su -c" instead 
of "sh -c" even though it should not make any difference.

I could have tried "echo -e "message\nbla\nbla\n" | /usr/sbin/sendmail" 
instead.

But I forgot about that possibility.

Instead I tried to use "mail" which doesn't require newlines to send 
something.

Yet the default environment provided by systemd causes it to fail, but 
by inserting "su" in between, it works.

I don't know WHY. I just know that it does. I don't know the intrinsics 
of mail, so I really can't tell.

It's just weird, that's all :p.