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Category: Debian

cPanelDebianEximHostingLinuxMail ServersRedHat

Essential Exim Mail Server Commands: The Complete Admin Reference

Exim is the default Mail Transfer Agent (MTA) on cPanel servers and many other Linux hosting environments. This reference ...

Iamem Hosting
 April 7, 2016 No Comments
cPanelDebianHostingLinuxPleskRedHat

Web Hosting Control Panels: A Complete Comparison Guide (2025)

A web hosting control panel is a browser-based management interface that lets users configure web servers, databases, email accounts, ...

Iamem Hosting
 March 15, 2016 No Comments
DebianLinuxMail ServersPostfixRedHatZimbra

Zimbra: How to Assign a Dedicated Outgoing SMTP IP per Domain

Running multiple domains on a single Zimbra mail server? You may need each domain to send outgoing email through ...

Iamem Hosting
 March 8, 2016 No Comments
Bash script to monitor and alert when Exim mail queue exceeds threshold — queue gauge showing alert state with cron schedule
cPanelDebianEximHostingLinuxMail ServersRedHat

Bash Script to Alert When Exim Mail Queue Is Too High

A sudden spike in the Exim mail queue is one of the clearest early warning signs of a spam ...

Iamem Hosting
 March 7, 2016 No Comments
How to change all URLs in WordPress after a domain migration using WP-CLI search-replace, SQL queries, and Interconnect/IT tool
CMScPanelDebianHostingLinuxPleskRedHatWordpress

How to Change All URLs in WordPress After a Domain Migration

After migrating a WordPress site to a new domain or switching from HTTP to HTTPS, you will often find ...

Iamem Hosting
 March 2, 2016 No Comments
PHP PEAR Mail scripts to test SMTP email delivery with SSL port 465, STARTTLS port 587, and plain port 25 authentication
cPanelDebianEximHostingLinuxMail ServersPleskRedHat

PHP Scripts to Test SMTP Email Delivery with Authentication

When diagnosing email delivery problems on a Linux server, you need a reliable way to test SMTP authentication and ...

Iamem Hosting
 March 1, 2016 No Comments
How to change SSH port on CentOS 7 — sshd_config, SELinux semanage, and firewalld configuration steps
cPanelDebianHostingLinuxPleskRedHat

How to Change SSH Port on CentOS 7 (Without Locking Yourself Out)

SSH port 22 is the most aggressively scanned port on the internet — automated bots attempt brute-force logins around ...

Iamem Hosting
 February 28, 2016 No Comments
How to hide Linux OS version from Nmap scans by changing default TTL in sysctl.conf — before and after comparison
DebianLinuxRedHat

How to Hide Linux OS Version from Nmap Scans

During a network reconnaissance scan, tools like Nmap use TCP/IP fingerprinting techniques — analysing packet characteristics such as TTL ...

Iamem Hosting
 February 26, 2016 No Comments
Best free online tools for system and network administrators — DNS, email, uptime, performance, and network diagnostics
cPanelDebianEximHostingLinuxMail ServersPleskPostfixQmailRedHatZimbra

Best Free Online Tools for System and Network Administrators

Every server administrator and hosting engineer has a go-to collection of online tools for diagnosing DNS issues, checking email ...

Iamem Hosting
 February 25, 2016 No Comments
WordPress not using PHP.ini memory limit — fix with WP_MEMORY_LIMIT and WP_MAX_MEMORY_LIMIT in wp-config.php
CMScPanelDebianHostingLinuxPleskRedHatWordpress

WordPress Not Using PHP.ini Memory Limit: How to Fix It

A common frustration on WordPress hosting setups is increasing memory_limit in php.ini only to find WordPress still reports the ...

Iamem Hosting
 February 24, 2016 No Comments