Bug#714634: lsb-core: Remove lsb-invalid-mta as a dependency of lsb-core; require an actual MTA instead

On Mon, 2013-07-08 at 10:46 +0200, Didier 'OdyX' Raboud wrote:
> Please note that the default-mta as shipped by Debian (exim4) in its 
> default configuration is not sending mails "to the internet" at all. If 
> your LSB-based assumption is that you can invoke sendmail to send mails 
> to anyone, then it is not fulfilled by default-mta either.

This is a good point. However, I still see it as an improvement - at
least local mails can be sent. The LSB even stipulates that sendmail
exiting 0 does not guarantee successful delivery (which seems reasonable
to me).

> So, taking a step back, sendmail, as currently shipped by default-mta, 
> only ensures that mails are sent to local users. In that context, I see 
> many uses for a sendmail erroring out instead of an working sendmail 
> piling mails in local mboxes never read by anyone.

Who says they never get read? By default, cron sends local mails for
example - in fact, I would love to know how lsb-invalid-mta affects cron
in this regard. Does this mean nobody gets notified when a cron job
fails? If so, this is really bad.