> -----Original Message----- > From: centos-bounces at centos.org [mailto:centos-bounces at centos.org] On > Behalf Of Gabriele Pohl > Sent: Friday, April 22, 2016 11:53 AM > To: centos at centos.org > Subject: [CentOS] output of "ls" (was: Re: Postgrey on CentOS 6) > > On Sat, 23 Apr 2016 02:23:28 +1200 > Peter <peter at pajamian.dhs.org> wrote: > > > On 23/04/16 02:13, Gabriele Pohl wrote: > > > I administer a postfix mail server on CentOS 6. > > > Now I want to setup another with similar configuration. > > > > > > But the postgrey package is no longer available in Epel > > > for this CentOS release as I have seen now: > > > https://admin.fedoraproject.org/pkgdb/package/rpms/postgrey/ > > > > > > 2. Can you give advice for an alternative setup > > > of greylisting for postfix on CentOS 6? > > > > Postgrey is largely obsoleted by postscreen which comes with postfix > > versions 2.8 and up. You can get the latest postfix (including > > postscreen) for CentOS 6 from GhettoForge (www.ghettoforge.org). > > Thanks for your help and so quickly :) > > I decided to try with current version of postgrey > from projects github repository. > https://github.com/schweikert/postgrey/releases/tag/version-1.36 > as I want to avoid using more 3rd party repos. > > Doing the first steps in manual installation > (create directory and user) I found out, > that I lack from knowledge on "ls" output.. > > There is a difference that I don't understand. > > What does the "." at the right side > of the attributes list mean? > Following the file mode bits is a single character that specifies whether an alternate access method such as an access control list applies to the file. When the character following the file mode bits is a space, there is no alternate access method. When it is a printing character, then there is such a method. GNU `ls' uses a `.' character to indicate a file with an SELinux security context, but no other alternate access method. A file with any other combination of alternate access methods is marked with a `+' character. > directory manually created on the shell: > drwxr-x--x 2 postgrey postfix 4096 Apr 22 17:19 /var/spool/postfix/postgrey/ > > created by package installation: > drwxr-x--x. 2 postgrey postfix 4096 Apr 13 16:23 /var/spool/postfix/postgrey > > I used this commands to create the first one > > # mkdir /var/spool/postfix/postgrey > # chmod 751 /var/spool/postfix/postgrey > # groupadd --gid 493 postgrey > # useradd --system --gid 493 --uid 493 --home /var/spool/postfix/postgrey - > M --shell /sbin/nologin postgrey > # chown postgrey /var/spool/postfix/postgrey > # chgrp postfix /var/spool/postfix/postgrey > > Can you give explanation what is causing the difference > compared to the package created directory? > > Gabriele