I'm building a new 16.04 machine using the distro package for postfix (v3.1.0). The main.cf and master.cf files are still at defaults.
I ran "postfix check" and it's listing warnings about some library files. This didn't happen on Ubuntu 14.04. I don't understand what it's trying to tell me or what I need to do about it. The output is below. Should I do something about this and, if so, what? Thanks in advance, Michael $ sudo postfix check postfix: Postfix is running with backwards-compatible default settings postfix: See http://www.postfix.org/COMPATIBILITY_README.html for details postfix: To disable backwards compatibility use "postconf compatibility_level=2" and "postfix reload" postfix/postfix-script: warning: group or other writable: /usr/lib/postfix/./sbin/lmtp postfix/postfix-script: warning: group or other writable: /usr/lib/postfix/./libpostfix-dns.so.1 postfix/postfix-script: warning: group or other writable: /usr/lib/postfix/./libpostfix-global.so.1 postfix/postfix-script: warning: group or other writable: /usr/lib/postfix/./libpostfix-master.so.1 postfix/postfix-script: warning: group or other writable: /usr/lib/postfix/./libpostfix-util.so.1 postfix/postfix-script: warning: group or other writable: /usr/lib/postfix/./libpostfix-tls.so.1 postfix/postfix-script: warning: group or other writable: /usr/lib/postfix/sbin/./lmtp $ $ ls -l /usr/lib/postfix total 764 lrwxrwxrwx 1 root root 23 Apr 13 2016 libpostfix-dns.so.1 -> libpostfix-dns.so.1.0.1 -rw-r--r-- 1 root root 26968 Apr 13 2016 libpostfix-dns.so.1.0.1 lrwxrwxrwx 1 root root 26 Apr 13 2016 libpostfix-global.so.1 -> libpostfix-global.so.1.0.1 -rw-r--r-- 1 root root 281152 Apr 13 2016 libpostfix-global.so.1.0.1 lrwxrwxrwx 1 root root 26 Apr 13 2016 libpostfix-master.so.1 -> libpostfix-master.so.1.0.1 -rw-r--r-- 1 root root 39472 Apr 13 2016 libpostfix-master.so.1.0.1 lrwxrwxrwx 1 root root 23 Apr 13 2016 libpostfix-tls.so.1 -> libpostfix-tls.so.1.0.1 -rw-r--r-- 1 root root 103344 Apr 13 2016 libpostfix-tls.so.1.0.1 lrwxrwxrwx 1 root root 24 Apr 13 2016 libpostfix-util.so.1 -> libpostfix-util.so.1.0.1 -rw-r--r-- 1 root root 264504 Apr 13 2016 libpostfix-util.so.1.0.1 -rwxr-xr-x 1 root root 13052 Apr 13 2016 postfix_groups.pl -rw-r--r-- 1 root root 18560 Apr 13 2016 postfix-pcre.so.1.0.1 -rw-r--r-- 1 root root 14504 Apr 13 2016 postfix-sqlite.so.1.0.1 drwxr-xr-x 2 root root 4096 Jul 23 08:41 sbin $ $ postconf -d | grep mail_version mail_version = 3.1.0 milter_macro_v = $mail_name $mail_version
