ISPConfig Version: 3.1.2 Operating System: Ubuntu 16.04.2 LTS Postfix Version 3.1.0 After installation following https://www.howtoforge.com/tutorial/perfect-server-ubuntu-with-nginx-and-ispconfig-3/ I get this: Code: hostname# /etc/init.d/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-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-tls.so.1 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-util.so.1 postfix/postfix-script: warning: group or other writable: /usr/lib/postfix/sbin/./lmtp After doing some research on this I found that the debian repo should have been patched against this (while it is clearly not). They're saying it has to do with the symlinks not using the permissions of the targets; Code: /usr/lib/postfix# ll total 780 drwxr-xr-x 5 root root 4096 Apr 5 22:19 ./ drwxr-xr-x 66 root root 4096 Apr 6 12:17 ../ lrwxrwxrwx 1 root root 23 Apr 13 2016 libpostfix-dns.so.1 -> libpostfix-dns.so.1.0.1* -r-x------ 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* -r-x------ 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* -r-x------ 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* -r-x------ 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* -r-x------ 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 18736 Apr 13 2016 postfix-mysql.so.1.0.1 drwxr-xr-x 2 root root 4096 Apr 5 21:57 postfix-script/ -rw-r--r-- 1 root root 14504 Apr 13 2016 postfix-sqlite.so.1.0.1 drwxr-xr-x 2 root root 4096 Apr 5 22:17 sbin/ drwxr-xr-x 2 root root 4096 Apr 5 20:48 showq/ and Code: /usr/lib/postfix/sbin# ll total 1252 drwxr-xr-x 2 root root 4096 Apr 5 22:17 ./ drwxr-xr-x 5 root root 4096 Apr 5 22:19 ../ -rwxr-xr-x 1 root root 18376 Apr 13 2016 anvil* -rwxr-xr-x 1 root root 47448 Apr 13 2016 bounce* -rwxr-xr-x 1 root root 121176 Apr 13 2016 cleanup* -rwxr-xr-x 1 root root 10104 Apr 13 2016 discard* -rwxr-xr-x 1 root root 10184 Apr 13 2016 dnsblog* -rwxr-xr-x 1 root root 10104 Apr 13 2016 error* -rwxr-xr-x 1 root root 18376 Apr 13 2016 flush* -rwxr-xr-x 1 root root 10104 Apr 13 2016 fsstone* lrwxrwxrwx 1 root root 4 Apr 13 2016 lmtp -> smtp* -rwxr-xr-x 1 root root 59352 Apr 13 2016 local* -rwxr-xr-x 1 root root 38864 Apr 13 2016 master* -rwxr-xr-x 1 root root 59336 Apr 13 2016 oqmgr* -rwxr-xr-x 1 root root 14280 Apr 13 2016 pickup* -rwxr-xr-x 1 root root 22792 Apr 13 2016 pipe* -rwxr-xr-x 1 root root 9344 Apr 13 2016 postfix-script* -rwxr-xr-x 1 root root 32676 Apr 13 2016 postfix-tls-script* -rwxr-xr-x 1 root root 6543 Apr 13 2016 postfix-wrapper* -rwxr-xr-x 1 root root 29446 Apr 13 2016 post-install* -rwxr-xr-x 1 root root 9288 Apr 13 2016 postmulti-script* -rwxr-xr-x 1 root root 67528 Apr 13 2016 postscreen* -rwxr-xr-x 1 root root 18376 Apr 13 2016 proxymap* -rwxr-xr-x 1 root root 67528 Apr 13 2016 qmgr* -rwxr-xr-x 1 root root 22472 Apr 13 2016 qmqpd* -rwxr-xr-x 1 root root 14280 Apr 13 2016 scache* -rwxr-xr-x 1 root root 14392 Apr 13 2016 showq* -r-xr-xr-x 1 root root 125376 Apr 13 2016 smtp* -rwxr-xr-x 1 root root 232920 Apr 13 2016 smtpd* -rwxr-xr-x 1 root root 10184 Apr 13 2016 spawn* -rwxr-xr-x 1 root root 22712 Apr 13 2016 tlsmgr* -rwxr-xr-x 1 root root 22472 Apr 13 2016 tlsproxy* -rwxr-xr-x 1 root root 26968 Apr 13 2016 trivial-rewrite* -rwxr-xr-x 1 root root 14280 Apr 13 2016 verify* -rwxr-xr-x 1 root root 22472 Apr 13 2016 virtual* I know this isn't directly related to ISPconfig, but I'd thought I'd mention it so others can find it.
I think you can just run the command as advised i.e. "postconf compatibility_level=2" and "postfix reload" and they should fix the warnings.
The compatibility_level=2 mention has nothing to do with the warnings. This is just what postfix tells you when you have older config options in your main.cf, like ISPconfig has.
Sorry but for me the warning come with a clear advise: So, unless one really wants backwards compatibility, one should apply the suggested advise.
That's actually bad advice, since ISPconfig still requires backwards compatibility. And again: This compatibility mention has nothing to do with the warnings about the symlink permissions.
I was saying about the compatibility warnings and not the others. Personally, I do not get the compatibility warnings or have issues with ISPC nor postfix after I follow the advice, as I also run ISPC update again thereafter. About other warnings you mentioned, unless I am wrong, I think they can safely be ignored for the time being (until official fixes are available).
