[Bug 1624394] Re: mimedefang: md-mx-ctrl reread does not work

[Daniel Holbach]

I'm uploading this to yakkety first.

Can the patch be forward to upstream and Debian too?

** Also affects: mimedefang (Ubuntu Xenial)
   Importance: Undecided
       Status: New

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Title:
  mimedefang: md-mx-ctrl reread does not work

Status in mimedefang package in Ubuntu:
  Confirmed
Status in mimedefang source package in Xenial:
  New

Bug description:
  (I'm putting on the SRU template, but regardless of whether this is
  SRU-eligible, fixing this in the development version is obviously the
  first step.)

  [Impact]
  This is a regression.

  While the main purpose of this is to "reread the filter rules", the
  biggest use by frequency is to reload the SpamAssassin rules. In our
  production deployment, this happens up to daily--every time their is a
  SpamAssassin rule update released.

  Without the ability to use "reread", one must fall back on "restart".
  That's a disruptive operation that will result in mail being
  tempfailed for a short period of time.

  If sysadmins have not noticed this regression, then rule changes are
  not getting applied properly, though normal slave turnover eventually
  brings them in.

  [Test Case]
  Steps to reproduce:
  sudo md-mx-ctrl reread

  Expected results:
  Forced reread of filter rules

  Actual results:
  Cannot destroy and recreate a Perl interpreter safely on this platform.  Filter rules will NOT be reread.

  [Regression Potential]
  The regression potential is small. The patch changes a ./configure test only. The only impact on the application code comes from the SAFE_EMBED_PERL #define being correctly enabled again, which it has been "forever".

  [Other Info]
  This patch has been accepted upstream:
  http://lists.roaringpenguin.com/pipermail/mimedefang/2016-September/037862.html

  I am running this change in production, as installed from our PPA:
  https://launchpad.net/~wiktel/+archive/ubuntu/ppa

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