Get the default configuration file makedefs.out for Postfix, optimized for Ubuntu 20.04 LTS (Focal Fossa). This example configuration ensures optimal compatibility and performance for Postfix, making it easy to set up and adjust to meet your needs.
Find and download the configuration file here: /etc/postfix/makedefs.out.
For more configurations and setup guides, visit our related files section to further customize your system.
# Do not edit -- this file documents how Postfix was built for your machine.
#----------------------------------------------------------------
# Start of summary of user-configurable 'make makefiles' options.
# CCARGS=-g -O2 -fdebug-prefix-map=/build/postfix-q6EyY5/postfix-3.4.13=. -fstack-protector-strong -Wformat -Werror=format-security -DDEBIAN -DHAS_PCRE -DHAS_LDAP -DUSE_LDAP_SASL -DHAS_SQLITE -DMYORIGIN_FROM_FILE -DHAS_CDB -DHAS_LMDB -DHAS_MYSQL -I/usr/include/mysql -DHAS_PGSQL -I/usr/include/postgresql -DHAS_SQLITE -I/usr/include -DHAS_SSL -I/usr/include/openssl -DUSE_SASL_AUTH -I/usr/include/sasl -DUSE_CYRUS_SASL -DUSE_TLS
# AUXLIBS=-lssl -lcrypto -lsasl2 -lpthread -Wl,-Bsymbolic-functions -Wl,-z,relro -Wl,-z,now -L/build/postfix-q6EyY5/postfix-3.4.13/debian
# AUXLIBS_CDB=-lcdb -L../../lib -L. -lpostfix-util
# AUXLIBS_LMDB=-llmdb -L../../lib -L. -lpostfix-util
# AUXLIBS_MYSQL=-lmysqlclient -L../../lib -L. -lpostfix-util -lpostfix-global
# AUXLIBS_LDAP=-lldap -llber -L../../lib -L. -lpostfix-util -lpostfix-global
# AUXLIBS_PCRE=-lpcre -L../../lib -L. -lpostfix-util
# AUXLIBS_SQLITE=-lsqlite3 -L../../lib -L. -lpostfix-util -lpostfix-global -lpthread
# AUXLIBS_PGSQL=-lpq -L../../lib -L. -lpostfix-util -lpostfix-global
# shared=yes
# dynamicmaps=yes
# pie=yes
# daemon_directory=/usr/lib/postfix/sbin
# html_directory=/usr/share/doc/postfix/html
# manpage_directory=/usr/share/man
# readme_directory=/usr/share/doc/postfix
# End of summary of user-configurable 'make makefiles' options.
#--------------------------------------------------------------
# System-dependent settings and compiler/linker overrides.
SYSTYPE = LINUX4
_AR = ar
ARFL = rv
_RANLIB = ranlib
SYSLIBS = -pie -z relro -z now -lssl -lcrypto -lsasl2 -lpthread -Wl,-Bsymbolic-functions -Wl,-z,relro -Wl,-z,now -L/build/postfix-q6EyY5/postfix-3.4.13/debian -ldb -lnsl -lresolv -ldl -licui18n -licuuc -licudata
AUXLIBS_CDB = -lcdb -L../../lib -L. -lpostfix-util
AUXLIBS_LDAP = -lldap -llber -L../../lib -L. -lpostfix-util -lpostfix-global
AUXLIBS_LMDB = -llmdb -L../../lib -L. -lpostfix-util
AUXLIBS_MYSQL = -lmysqlclient -L../../lib -L. -lpostfix-util -lpostfix-global
AUXLIBS_PCRE = -lpcre -L../../lib -L. -lpostfix-util
AUXLIBS_PGSQL = -lpq -L../../lib -L. -lpostfix-util -lpostfix-global
AUXLIBS_SQLITE = -lsqlite3 -L../../lib -L. -lpostfix-util -lpostfix-global -lpthread
CC = gcc -fPIC -I. -I../../include -g -O2 -fdebug-prefix-map=/build/postfix-q6EyY5/postfix-3.4.13=. -fstack-protector-strong -Wformat -Werror=format-security -DDEBIAN -DHAS_PCRE -DHAS_LDAP -DUSE_LDAP_SASL -DHAS_SQLITE -DMYORIGIN_FROM_FILE -DHAS_CDB -DHAS_LMDB -DHAS_MYSQL -I/usr/include/mysql -DHAS_PGSQL -I/usr/include/postgresql -DHAS_SQLITE -I/usr/include -DHAS_SSL -I/usr/include/openssl -DUSE_SASL_AUTH -I/usr/include/sasl -DUSE_CYRUS_SASL -DUSE_TLS -DHAS_DEV_URANDOM -DDEF_DAEMON_DIR=\"/usr/lib/postfix/sbin\" -DDEF_HTML_DIR=\"/usr/share/doc/postfix/html\" -DDEF_MANPAGE_DIR=\"/usr/share/man\" -DDEF_README_DIR=\"/usr/share/doc/postfix\" -DUSE_DYNAMIC_LIBS -DUSE_DYNAMIC_MAPS $(WARN)
OPT = -O2
DEBUG = -g
AWK = awk
STRCASE =
EXPORT = CCARGS='-I. -I../../include -g -O2 -fdebug-prefix-map=/build/postfix-q6EyY5/postfix-3.4.13=. -fstack-protector-strong -Wformat -Werror=format-security -DDEBIAN -DHAS_PCRE -DHAS_LDAP -DUSE_LDAP_SASL -DHAS_SQLITE -DMYORIGIN_FROM_FILE -DHAS_CDB -DHAS_LMDB -DHAS_MYSQL -I/usr/include/mysql -DHAS_PGSQL -I/usr/include/postgresql -DHAS_SQLITE -I/usr/include -DHAS_SSL -I/usr/include/openssl -DUSE_SASL_AUTH -I/usr/include/sasl -DUSE_CYRUS_SASL -DUSE_TLS -DHAS_DEV_URANDOM -DDEF_DAEMON_DIR=\"/usr/lib/postfix/sbin\" -DDEF_HTML_DIR=\"/usr/share/doc/postfix/html\" -DDEF_MANPAGE_DIR=\"/usr/share/man\" -DDEF_README_DIR=\"/usr/share/doc/postfix\" -DUSE_DYNAMIC_LIBS -DUSE_DYNAMIC_MAPS' OPT='-O2' DEBUG='-g'
WARN = -Wall -Wno-comment -Wformat -Wimplicit -Wmissing-prototypes \
-Wparentheses -Wstrict-prototypes -Wswitch -Wuninitialized \
-Wunused -Wno-missing-braces -fcommon
DEFINED_MAP_TYPES = pcre ldap sqlite cdb lmdb mysql pgsql ssl dev_urandom
MAKE_FIX =
# Switch between Postfix static and dynamically-linked libraries.
AR = :
RANLIB = :
LIB_PREFIX = postfix-
LIB_SUFFIX = .so
SHLIB_CFLAGS = -fPIC
SHLIB_DIR = /usr/lib/postfix
SHLIB_ENV = LD_LIBRARY_PATH=/build/postfix-q6EyY5/postfix-3.4.13/lib
SHLIB_LD = gcc -shared -Wl,-soname,${LIB}
SHLIB_SYSLIBS = -lssl -lcrypto -lsasl2 -lpthread -Wl,-Bsymbolic-functions -Wl,-z,relro -Wl,-z,now -L/build/postfix-q6EyY5/postfix-3.4.13/debian -ldb -lnsl -lresolv -ldl -licui18n -licuuc -licudata
SHLIB_RPATH = -Wl,--enable-new-dtags -Wl,-rpath,${SHLIB_DIR}
# Switch between dynamicmaps.cf plugins and hard-linked databases.
NON_PLUGIN_MAP_OBJ =
PLUGIN_MAP_OBJ = $(MAP_OBJ)
PLUGIN_MAP_OBJ_UPDATE = plugin_map_obj_update
PLUGIN_MAP_SO_MAKE = plugin_map_so_make
PLUGIN_MAP_SO_UPDATE = plugin_map_so_update
PLUGIN_LD = gcc -shared
POSTFIX_INSTALL_OPTS =
# Application-specific rules.
Download the raw file with wget or curl
wget -O makedefs.out.example https://exampleconfig.com/static/raw/postfix/ubuntu20.04/etc/postfix/makedefs.out
curl https://exampleconfig.com/static/raw/postfix/ubuntu20.04/etc/postfix/makedefs.out > makedefs.out.example
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