We’re moving an existing Exim 4.72 installation from Debian Squeeze to Ubuntu 14.04 (Ubuntu 14.04 comes with Exim 4.82).
Starting with Exim 4.77, a match_* no longer expand right-hand-side by default. However, Exim provides a new compile-time build option, EXPAND_LISTMATCH_RHS.
EXPAND_LISTMATCH_RHS is one of the reasons we are going to compile from source.
Note that this article does not cover Exim service configuration. If you need to configure Exim, you can do so by modifying the /etc/exim4/exim4.conf file.
Software
Software used in this article:
- Ubuntu 14.04
- Exim 4.82 (source code)
- Checkinstall 1.6
Pre-setup
Install Exim from repositories. This will create a Debian-exim user and group.
$ sudo apt-get install --no-install-recommends exim4-daemon-heavy
Also copy the following files. We’ll need them later:
$ cp /etc/init.d/exim4 ~/exim4.init $ cp /etc/default/exim4 ~/exim4.default
Purge Exim:
$ sudo dpkg -P exim4-base exim4-daemon-heavy exim4-config
Exim from Source
Install dpkg-dev, checkinstall and pkg-config:
$ sudo apt-get install dpkg-dev checkinstall pkg-config
Get Exim’s source code:
$ mkdir ./exim-src && cd ./exim-src $ apt-get source exim4
Install build dependencies:
$ sudo apt-get build-dep exim4
Configure Exim Build Options
Configure build options according to your needs:
$ cd ./exim4* $ cp ./src/EDITME ./Local/Makefile $ vim ./Local/Makefile
An example configuration is provided below:
$ grep -ve "^#" -ve "^$" ./Local/Makefile BIN_DIRECTORY=/usr/sbin CONFIGURE_FILE=/etc/exim4/exim4.conf EXIM_USER=Debian-exim EXIM_GROUP=Debian-exim SPOOL_DIRECTORY=/var/spool/exim ROUTER_ACCEPT=yes ROUTER_DNSLOOKUP=yes ROUTER_IPLITERAL=yes ROUTER_MANUALROUTE=yes ROUTER_QUERYPROGRAM=yes ROUTER_REDIRECT=yes ROUTER_IPLOOKUP=yes TRANSPORT_APPENDFILE=yes TRANSPORT_AUTOREPLY=yes TRANSPORT_PIPE=yes TRANSPORT_SMTP=yes TRANSPORT_LMTP=yes SUPPORT_MAILDIR=yes SUPPORT_MAILSTORE=yes SUPPORT_MBX=yes LOOKUP_DBM=yes LOOKUP_LSEARCH=yes LOOKUP_DNSDB=yes LOOKUP_CDB=yes LOOKUP_DSEARCH=yes LOOKUP_LDAP=yes LOOKUP_MYSQL=yes LOOKUP_NIS=yes LOOKUP_NISPLUS=yes LOOKUP_PASSWD=yes LOOKUP_SQLITE=yes LOOKUP_SQLITE_PC=sqlite3 LOOKUP_WILDLSEARCH=yes LOOKUP_NWILDLSEARCH=yes LDAP_LIB_TYPE=OPENLDAP2 PCRE_CONFIG=yes LOOKUP_INCLUDE=-I /usr/local/ldap/include -I /usr/include/mysql LOOKUP_LIBS=-L/usr/local/lib -lldap -llber -lmysqlclient -lpq -lsqlite3 -lm -ldl -lpam WITH_CONTENT_SCAN=yes WITH_OLD_DEMIME=yes FIXED_NEVER_USERS=root AUTH_CRAM_MD5=yes AUTH_DOVECOT=yes AUTH_PLAINTEXT=yes AUTH_SPA=yes HEADERS_CHARSET="ISO-8859-1" HAVE_ICONV=yes DEFAULT_CRYPT=crypt16 SUPPORT_TLS=yes USE_GNUTLS=yes USE_GNUTLS_PC=gnutls DLOPEN_LOCAL_SCAN=yes LDFLAGS += -rdynamic CFLAGS += -fvisibility=hidden LOG_FILE_PATH=/var/log/exim4/%slog SYSLOG_LOG_PID=yes EXICYCLOG_MAX=10 COMPRESS_COMMAND=/usr/bin/gzip COMPRESS_SUFFIX=gz ZCAT_COMMAND=/usr/bin/zcat EXPAND_DLFUNC=yes SUPPORT_PAM=yes NO_SYMLINK=yes SYSTEM_ALIASES_FILE=/etc/aliases HAVE_IPV6=yes TMPDIR="/tmp" MAKE_SHELL=/bin/sh SUPPORT_MOVE_FROZEN_MESSAGES=yes EXPAND_LISTMATCH_RHS=yes
Optionally, if you need an Exim monitor, configure it too:
$ cp ./exim_monitor/EDITME ./Local/eximon.conf $ vim ./Local/eximon.conf
Setup Exim Directories
We will need the following directories:
$ sudo mkdir -m 0755 /etc/exim4
$ sudo mkdir -m 0750 /var/log/exim4 $ sudo chown Debian-exim:Debian-exim /var/log/exim4
$ sudo mkdir -m 0750 /var/spool/exim $ sudo chown Debian-exim:Debian-exim /var/spool/exim
Compile Source and Install Exim
Compile the source code:
$ make
Build a .deb package:
$ sudo checkinstall -D --install=no --pkgname exim4 --pkgrelease $(date +%F) \ --maintainer "[email protected]" --strip=no --stripso=no --addso=yes --nodoc
Install the package:
$ sudo dpkg -i ./exim4*deb
Check Exim version and modules:
$ exim -bV
Exim version 4.82 #3 built 24-Feb-2015 18:10:38
Copyright (c) University of Cambridge, 1995 - 2013
(c) The Exim Maintainers and contributors in ACKNOWLEDGMENTS file, 2007 - 2013
Berkeley DB: Berkeley DB 5.3.28: (September 9, 2013)
Support for: crypteq iconv() IPv6 PAM Expand_dlfunc GnuTLS move_frozen_messages Content_Scanning DKIM Old_Demime
Lookups (built-in): lsearch wildlsearch nwildlsearch iplsearch cdb dbm dbmjz dbmnz dnsdb dsearch ldap ldapdn ldapm mysql nis nis0 nisplus passwd sqlite
Authenticators: cram_md5 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
Create Symbolic Links
From the Exim documentation:
Building and installing Exim does not of itself put it in general use. The name by which the system message transfer agent is called by mail user agents is either ‘/usr/lib/sendmail’, or ‘/usr/sbin/sendmail’ (depending on the operating system), and it is necessary to make this name point to the exim binary in order to get them to use it. This is normally done by renaming any existing file and making ‘/usr/lib/sendmail’ or ‘/usr/sbin/sendmail’ a symbolic link to the exim binary.
You may need the following symlinks:
$ sudo ln -s /usr/sbin/exim /usr/sbin/sendmail $ sudo ln -s /usr/sbin/exim /usr/sbin/exim4
$ sudo mkdir /usr/lib/exim4 $ sudo ln -s /usr/sbin/exim /usr/lib/exim4/exim4
Start Exim
You can now start Exim by issuing the following command:
$ sudo /usr/sbin/exim4 -bd -q30m
Copy the files that were saved previously:
$ sudo cp ~/exim4.init /etc/init.d/exim4 $ sudo cp ~/exim4.default /etc/default/exim4
Now, you can also start Exim via:
$ sudo /etc/init.d/exim4 start