Bug#817244: exim4-base: cron noise re environment

[shizuma at teksavvy.com]

Package: exim4-base
Version: 4.84.2-1
Followup-For: Bug #817244

Dear Maintainer,

Some supplemental information would be appreciated.

I've edited update-exim4.conf.conf
and added
add_environment='<; PATH=/bin:/usr/bin'
keep_environment=''
one by one then both

I've also edited exim4.conf.template
and added

.ifdef MAIN_KEEP_ENVIRONMENT
keep_environment = MAIN_KEEP_ENVIRONMENT
.else
# set option to empty value to avoid warning.
keep_environment =
.endif
.ifdef MAIN_ADD_ENVIRONMENT
add_environment = MAIN_ADD_ENVIRONMENT
.endif

then replaced with 
#.ifdef MAIN_KEEP_ENVIRONMENT
#keep_environment = MAIN_KEEP_ENVIRONMENT
#.else
## set option to empty value to avoid warning.
keep_environment =
#.endif
#.ifdef MAIN_ADD_ENVIRONMENT
#add_environment = MAIN_ADD_ENVIRONMENT
#.endif

Between each edits, I've ran as root 
update-exim4.conf
and service exim4 reload

Nothing helped, the exim mainlog is still reporting

2016-03-17 15:30:03 Warning: purging the environment.
 Suggested action: use keep_environment.
2016-03-17 15:30:21 Warning: purging the environment.
 Suggested action: use keep_environment.
2016-03-17 15:35:02 Warning: purging the environment.
 Suggested action: use keep_environment.

every 5 minutes.

Thanks.

-- Package-specific info:
Exim version 4.84_2 #1 built 13-Mar-2016 17:47:17
Copyright (c) University of Cambridge, 1995 - 2014
(c) The Exim Maintainers and contributors in ACKNOWLEDGMENTS file, 2007 - 2014
Berkeley DB: Berkeley DB 5.3.28: (September  9, 2013)
Support for: crypteq iconv() IPv6 PAM Perl Expand_dlfunc GnuTLS move_frozen_messages Content_Scanning DKIM Old_Demime PRDR OCSP
Lookups (built-in): lsearch wildlsearch nwildlsearch iplsearch cdb dbm dbmjz dbmnz dnsdb dsearch ldap ldapdn ldapm mysql nis nis0 passwd pgsql sqlite
Authenticators: cram_md5 cyrus_sasl dovecot plaintext spa
Routers: accept dnslookup ipliteral iplookup manualroute queryprogram redirect
Transports: appendfile/maildir/mailstore/mbx autoreply lmtp pipe smtp
Fixed never_users: 0
Size of off_t: 8
Configuration file is /etc/exim4/exim4.conf
# /etc/exim4/update-exim4.conf.conf
#
# Edit this file and /etc/mailname by hand and execute update-exim4.conf
# yourself or use 'dpkg-reconfigure exim4-config'
#
# Please note that this is _not_ a dpkg-conffile and that automatic changes
# to this file might happen. The code handling this will honor your local
# changes, so this is usually fine, but will break local schemes that mess
# around with multiple versions of the file.
#
# update-exim4.conf uses this file to determine variable values to generate
# exim configuration macros for the configuration file.
#
# Most settings found in here do have corresponding questions in the
# Debconf configuration, but not all of them.
#
# This is a Debian specific file

dc_eximconfig_configtype='smarthost'
dc_other_hostnames='dailyplanet.net'
dc_local_interfaces=''
dc_readhost=''
dc_relay_domains=''
dc_minimaldns='false'
dc_relay_nets=''
dc_smarthost='smtp.teksavvy.com'
CFILEMODE='644'
dc_use_split_config='false'
dc_hide_mailname='false'
dc_mailname_in_oh='true'
dc_localdelivery='mail_spool'
smtp_receive_timeout='300s'
add_environment='<; PATH=/bin:/usr/bin'
keep_environment=''
mailname:teksavvy.com

-- System Information:
Debian Release: 8.3
  APT prefers stable-updates
  APT policy: (990, 'stable-updates'), (990, 'stable'), (500, 'oldstable-updates'), (100, 'oldstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.16.0-4-amd64 (SMP w/6 CPU cores)
Locale: LANG=fr_CA.UTF-8, LC_CTYPE=fr_CA.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Init: systemd (via /run/systemd/system)

Versions of packages exim4-base depends on:
ii  adduser                        3.113+nmu3
ii  cron [cron-daemon]             3.0pl1-127+deb8u1
ii  debconf [debconf-2.0]          1.5.56
ii  exim4-config [exim4-config-2]  4.84.2-1
ii  libc6                          2.19-18+deb8u3
ii  libdb5.3                       5.3.28-9
ii  lsb-base                       4.1+Debian13+nmu1
ii  netbase                        5.3

Versions of packages exim4-base recommends:
ii  bsd-mailx [mailx]  8.1.2-0.20141216cvs-2
ii  perl-modules       5.20.2-3+deb8u4
ii  psmisc             22.21-2

Versions of packages exim4-base suggests:
ii  bsd-mailx [mail-reader]          8.1.2-0.20141216cvs-2
ii  emacs24 [mail-reader]            24.4+1-5
pn  exim4-doc-html | exim4-doc-info  <none>
pn  eximon4                          <none>
ii  file                             1:5.22+15-2+deb8u1
ii  mutt [mail-reader]               1.5.23-3
ii  openssl                          1.0.1k-3+deb8u4
pn  spf-tools-perl                   <none>
ii  swaks                            20130209.0-3
ii  xemacs21-mule [mail-reader]      21.4.22-14~deb8u1

-- debconf information:
  exim4-base/drec:
  exim4/purge_spool: false