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OpenDKIM Postfix SMTP Relay Server on Debian -7

Rumi, September 11, 2016February 26, 2024

Install OpenDKIM Before starting the installation, a system update is recommended: sudo apt-get update sudo apt-get dist-upgrade Install OpenDKIM and it’s dependencies: sudo apt-get install opendkim opendkim-tools Additional packages will be listed as dependencies, type yes and press Enter to continue. Configure OpenDKIM A couple of files must be created…

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Perfect way to reset MySQL Root Password on Debian/Ubuntu

Rumi, August 9, 2016

If you forgot your MySQL root password, you can reset it by following these steps. 1. Stop the MySQL service. service mysql stop 2. Start MySQL without password and permission checks. mysqld_safe –skip-grant-tables & 3. Press [ENTER] again if your output is halted. 4. Connect to MySQL. mysql -u root…

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How to install Legacy Photoshop 7 on windows 10

Rumi, July 30, 2016

Regarding the OP’s problem, it appears the installer exe requires to use resources held by other processes. For me it was Skype and Logitech wireless mouse software. To work out what is “blocking” the installer: start  task manager, you’ll see setup.exe running as a background process but consuming no CPU…

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Reset a MySQL root password for Debian

Rumi, July 14, 2016

Use the following steps to reset a MySQL root password by using the command line interface. Stop the MySQL service (Ubuntu and Debian) Run the following command: sudo /etc/init.d/mysql stop (CentOS, Fedora, and Red Hat Enterprise Linux) Run the following command: sudo /etc/init.d/mysqld stop Start MySQL without a password Run…

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Install ioncube on Linux server

Rumi, July 14, 2016

Begin by downloading the latest loaders to your computer from http://www.ioncube.com/loaders.php Extract the contents of the archived file on your local PC to a folder of your choice. Upload the folder IONCUBE via FTP to your domain webspace Now establish an SSH connection with server using a suitable client (e.g….

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ip_conntrack table full, dropping packet

Rumi, July 3, 2016

Last week, I found myself with a server under low load, but it couldn’t make or receive network connections. When I ran dmesg, I found the following line repeating over and over: ip_conntrack: table full, dropping packet I’d seen this message before, but I headed over to Red Hat’s site…

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MDaemon firewall ports to be opened

Rumi, June 24, 2016

Ports to be opened: SMTP inbound / outbound port – 25 MSA inbound port – 587 ODMR inbound port – 366 SMTP SSL port – 465 ActiveSync port – 80 ActiveSync SSL port – 443 BlackBerry Enterprise Server – 3101 POP3 inbound / outbound port – 110 IMAP inbound port…

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Auto installation of Zenoss on CentOS 6

Rumi, June 19, 2016

The simplest way to install Zenoss Core 4.2 on a newly-deployed RHEL/CentOS 64-bit 5/6 system is to use our auto-deploy script, which downloads all required files for you. To use the script, first set up a new server running one of our supported operating systems. Then, as root, run the…

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Very Generic Linux Service Watchdog script

Rumi, June 16, 2016

A strong watchdog script- indeed! #!/bin/bash # # watchdog # # Run as a cron job to keep an eye on what_to_monitor which should always # be running. Restart what_to_monitor and send notification as needed. # # This needs to be run as root or a user that can start…

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User Management in Proxmox

Rumi, June 16, 2016

Proxmox VE authentication server This is a unix like password store (/etc/pve/priv/shadow.cfg). Password are encrypted using the SHA-256 hash method. Users are allowed to change passwords. Terms and Definitions Users A Proxmox VE user name consists of 2 parts: <userid>@<realm>. The login screen on the GUI shows them a separate…

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Myself…

Hi, I am Hasan T. Emdad Rumi, an IT Project Manager & Consultant, Virtualization & Cloud Savvyfrom Dhaka, Bangladesh. I have prior experience in managing numerous local and international projects in the area of Telco VAS & NMC, National Data Center & PKI Naitonal Root and CA Infrastructure. Also engaged with several Offshore Software Development Team.

Worked with Orascom Telecom-Banglalink, Network Elites as VAS partner, BTRC, BTT (Turkey) , Mango Teleservices Limited and Access to Informaiton (A2I-UNDP)

Currently working at Oracle Corporation as Principal Technology Solution and Cloud Architect.

You can reach me [h.t.emdad at gmail.com] and I will be delighted to exchange my views.

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