https://bugs.exim.org/show_bug.cgi?id=2381
Bug ID: 2381
Summary: Environment variable string expansion not working when
used with headers_add
Product: Exim
Version: 4.91
Hardware: x86-64
OS: Linux
Status: NEW
Severity: bug
Priority: medium
Component: String expansion
Assignee: nigel@???
Reporter: rich@???
CC: exim-dev@???
In short, using the following line in my Exim transport does not result in the
string expansion (insertion) of the environment variable:
headers_add = "X-TESTVAR: ${env{TESTVAR}{$value}{The TESTVAR environment
variable was not found}}"
I never get `$value`; I always get "The TESTVAR environment variable was not
found".
All of the following text has been manually anonymized.
-------------
Environment:
account@??? [~]# cat /etc/redhat-release
CentOS release 6.10 (Final)
Exim version:
account@??? [~]# exim --version
Exim version 4.91 #1 built 11-May-2018 09:49:25
Copyright (c) University of Cambridge, 1995 - 2018
(c) The Exim Maintainers and contributors in ACKNOWLEDGMENTS file, 2007 - 2018
Berkeley DB: Berkeley DB 4.7.25: (September 12, 2013)
Support for: crypteq iconv() IPv6 PAM Perl OpenSSL Content_Scanning DKIM DNSSEC
Event I18N OCSP PRDR SPF Experimental_SRS
Lookups (built-in): lsearch wildlsearch nwildlsearch iplsearch dbm dbmjz dbmnz
dnsdb passwd sqlite
Authenticators: cram_md5 dovecot plaintext spa
Routers: accept dnslookup ipliteral manualroute queryprogram redirect
Transports: appendfile/maildir autoreply lmtp pipe smtp
Malware: f-protd f-prot6d drweb fsecure sophie clamd avast sock cmdline
Configure owner: 0:0
Size of off_t: 8
2019-03-08 19:04:22 cwd=/home/account 2 args: exim --version
Configuration file is /etc/exim.conf
-------------
The relevant transport from my exim.conf:
dovecot_virtual_delivery:
driver = lmtp
socket = /var/run/dovecot/lmtp
batch_max = 200
rcpt_include_affixes
delivery_date_add
envelope_to_add
return_path_add
headers_add = "X-TESTVAR: ${env{TESTVAR}{$value}{The TESTVAR environment
variable was not found}}"
-------------
The commands I executed to send the email:
account@??? [~]# export TESTVAR=hello
account@??? [~]# echo $TESTVAR
hello
account@??? [~]# exim -t
to:me@???
Hi there, this email should have a header named "X-TESTVAR" and it should have
a value of "hello".
account@??? [~]#
-------------
The resulting email:
Return-Path: <account@???>
Delivered-To: me@???
Received: from host.example.com
by host.example.com with LMTP id IH+3MCUQg1waLwAAx771+g
for <me@???>; Fri, 08 Mar 2019 19:00:21 -0600
Return-path: <account@???>
Envelope-to: me@???
Delivery-date: Fri, 08 Mar 2019 19:00:21 -0600
Received: from account by host.example.com with local (Exim 4.91)
(envelope-from <account@???>)
id 1h2QLV-0004Mo-Ee
for me@???; Fri, 08 Mar 2019 19:00:21 -0600
to:me@???
Message-Id: <E1h2QLV-0004Mo-Ee@???>
From: account@???
Date: Fri, 08 Mar 2019 19:00:20 -0600
X-TESTVAR: The TESTVAR environment variable was not found
Hi there, this email should have a header named "X-TESTVAR" and it should have
a value of "hello".
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