Updated cron?

Leroy Tennison leroy at datavoiceint.com
Tue Aug 13 14:04:14 UTC 2019

I don't know about a specification but, from "man 5 crontab" on OpenSUSE 13.2 'If MAILFROM is defined (and non-empty), it is used as the envelope sender address, otherwise, "root" is used.'  I hadn't thought about the MTA option because I assumed (incorrectly) that it would expect that to be set elsewhere (the MUA).  I did find that for Postfix (which seems to be what is installed by Ubuntu) it can be set using the Postfix smtp_generic_maps feature, I'll have to test.  Thanks for asking - it challenged my assumptions and hopefully provides a solution.


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From: Robie Basak <robie.basak at ubuntu.com>
Sent: Monday, August 12, 2019 4:05:34 PM
To: Leroy Tennison <leroy at datavoiceint.com>
Cc: ubuntu-server at lists.ubuntu.com <ubuntu-server at lists.ubuntu.com>
Subject: [EXTERNAL] Re: Updated cron?

On Fri, Aug 09, 2019 at 02:04:08PM +0000, Leroy Tennison wrote:
> Is a newer version of cron (or an alternative) available for Ubuntu?
> The reason I ask is that another distribution has a 2012 version that
> has a MAILFROM capability.

Is there a specification of what MAILFROM actually does, and is there a
reason this can't be implemented in MTA configuration instead? I would
want sending mail to work from anything on the system rather than fix it
on a per-application basis.
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