F20 - Unintended consequences of no default MTA - How best to fix

Suvayu Ali fatkasuvayu+linux at gmail.com
Tue Dec 31 00:46:07 UTC 2013


Hi Chris,

On Mon, Dec 30, 2013 at 01:20:04PM -0600, Chris Adams wrote:
> Once upon a time, Robert Moskowitz <rgm at htt-consult.com> said:
> > On 12/30/2013 01:34 PM, Kevin Fenzi wrote:
> > >On Mon, 30 Dec 2013 13:24:07 -0500
> > >Robert Moskowitz <rgm at htt-consult.com> wrote:
> > >If you want logwatch or have cron jobs with output you wish, feel free
> > >to install a MTA and configure it.
> > been there done that.  Looking to follow the flow of no MTA.  See if
> > it can be done.
> 
> Well, as it has been said, mailx is not an MTA, and it takes an MTA to
> transfer mail (even locally, because it crosses privilege boundaries).
> In the "old days", /bin/mail was setuid and could directly write
> /var/mail, but there were security issues with that and it is no longer
> supported (it also caused confusion when you actually had a local MTA
> configured to smart-host to a remote server).
> 
> If you want to handle mail in any fashion beyond using a client that
> sends/receives via network protocols (IMAP/POP3 and SMTP to a remote
> server, like mutt or Thunderbird), install an MTA.  IIRC, at least
> Postfix and Sendmail will work for local mail handling (and not
> listening on the network) in a default install, so "yum install <your
> preferred MTA>" and you should be set.

I was under the same impression, hence my original thread:

  <https://lists.fedoraproject.org/pipermail/users/2013-December/443441.html>

However I was told (by Frank) that it is possible using mailx.

  <https://lists.fedoraproject.org/pipermail/users/2013-December/444265.html>
  <https://lists.fedoraproject.org/pipermail/users/2013-December/444304.html>

So now I'm completely lost as to what is possible and what is not.  For
now I have sendmail installed, but if possible I would like to remove
that (at least on my laptop).

Hope that makes sense.  And thanks for any explanations.

Cheers,

-- 
Suvayu

Open source is the future. It sets us free.


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