Linux How to use, Tutorials and scripts; Guides

Here you can see how you mange postfix in linux plesk server. mailq is a very simple command that will show the messages awaiting delivery. # mailq # /usr/local/psa/admin/sbin/mailqueuemng Yet another helpful command to view more information on the emails in the queue. From this command you will receive a random id before the mail information is given. Example: 4AC531488D76 (4, D)   Return-path: lfklxmuy@domain.co.uk   From: lfklxmuy@domain.co.uk   To: willi.klippert@gmx.de   Subject: =?utf-8?Q?Was_schnellt_in_die_H=C3=B6he=2C_wenn_Sie_dieses_Angebot_nutzen=3F?=   Date: Thu, 24 Oct 2013 06:43:43 -0500 (CDT)   Size: 1478   Message-Id: <20131024114343.4AC531488D76@echo.netpivotal.com> Timestamp: 1382615023   Queue time: 1382615023   Envelope Recipients (D): 4AC0C1480643 (4, D)   Return-path: xujk@domain.co.uk   From: xujk@babywishes.co.uk   To: lars-paulsen@12move.de   Subject: =?utf-8?Q?Was_...

[root@server2 html]# rpm -Uvh http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm Retrieving http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm warning: /var/tmp/rpm-tmp.E0T3tz: Header V3 RSA/SHA256 Signature, key ID 0608b895: NOKEY Preparing...                ########################################### [100%]    1:epel-release           ########################################### [100%] [root@server2 html]#   rpm -Uvhhttp://rpms.famillecollet.com/enterprise/remi-release-6.rpm Retrieving http://rpms.famillecollet.com/enterprise/remi-release-6.rpm warning: /var/tmp/rpm-tmp.xd9I2b: Header V3 DSA/SHA1 Signature, key ID 00f97f56: NOKEY Preparing...                ########################################### ...

Csf is most popular firewall in linux we will recommend it in cPanel. It's easy to use. You can enable or disable CSF safely without losing your firewall configuration. To disable CSF: csf -x To enable CSF: csf -e Managing Ports CSF can open or close ports to any and all IP addresses. This is useful when you have changed your port configuration from the standard port numbers. Simply edit the following file, using a file editor: /etc/csf/csf.conf Find the following lines, and add the port numbers you wish to open: # Allow incoming TCP ports TCP_IN = "20,21,22,25,53,80,110,143,443,465,587,993,995,26" # Allow outgoing TCP ports TCP_OUT = "20,21,22,25,37,43,53,80,110,113,443,587,873" Blocking ports is as simple as removing the port numbers from the list. To ensure that the change takes effect, be sure to restart CSF using the following command: csf -r It is also possible to block entire countries. Be warned, however, that so...