Cooper Reagan
539 posts
Setting Up SPF for VPS Email Authentication
What you will read?1 Configuring SPF on a VPS Server2 Testing and Verifying SPF Setup3 Common SPF Errors and Troubleshooting4 Prerequisites for Setting Up SPF Sender Policy Framework (SPF) is an email authentication protocol designed to detect and prevent email spoofing. It allows domain owners to specify which mail servers are authorized to send emails…
Difference Between IMAP and POP3 Ports (143, 993, 110, 995)
What you will read?1 IMAP vs POP3: A Comparison2 Port Numbers for IMAP and POP33 Secure IMAP and POP3 Connections4 Choosing the Right Protocol for Your Needs5 IMAP vs POP3: A Comprehensive Comparison The two most common protocols for transferring emails from a mail server to an email client are IMAP (Internet Message Access Protocol) and…
Troubleshooting Email Delivery Issues on VPS
What you will read?1 Checking Server Logs for Errors2 Resolving SPF, DKIM, and DMARC Issues3 Addressing Blacklisting and Spam Filters Email delivery issues can cause significant disruptions, especially when running services on a VPS. Understanding the common problems and troubleshooting steps is essential to ensure smooth communication. These issues may range from simple configuration errors…
How to Open and Close Email Ports on a VPS Firewall
What you will read?1 Checking Existing Firewall Rules on Your VPS2 Opening Email Ports on Your VPS Firewall (Port 25, 465, 587)3 Closing Email Ports on Your VPS Firewall4 Why Email Ports Need to Be Opened and Closed on a VPS?5 Conclusion Managing email ports on a VPS firewall is crucial for ensuring that your…
How to Test Email Ports on VPS Using telnet and netcat
What you will read?1 How to Use Telnet to Test Email Ports2 Using Netcat to Check Email Ports on Your VPS3 Testing SMTP Port 25 with Telnet and Netcat4 Verifying Secure Email Ports (465, 587) with Telnet and Netcat Email port testing is a crucial step in ensuring proper email communication on your VPS. Email…
Setting Up a Secure Mail Server on VPS with Postfix and Dovecot
What you will read?1 Installing Postfix and Dovecot on VPS2 Configuring Postfix for Outgoing Mail3 Setting Up Dovecot for Incoming Mail4 Configuring SSL/TLS for Secure Mail Transmission5 Preparing Your VPS for a Mail Server Setup Postfix and Dovecot are among the most popular and reliable open-source solutions for setting up a secure mail server on…
How to Configure SMTP on Your VPS for Sending Emails
What you will read?1 Configuring SMTP Authentication2 Prerequisites for Configuring SMTP on a VPS Setting up an SMTP server on your VPS involves selecting the right software, installing it, and configuring it for secure and reliable email delivery. Popular SMTP server software options include Postfix, Exim, and Sendmail. Among these, Postfix is widely favored for…
25, 465, and 587 Email Ports and what is ports?
What you will read?1 Port 25: The Traditional SMTP Port2 Port 465: Secure SMTP for Sending Emails3 Port 587: Recommended Port for Sending Email with Encryption4 Comparison of Ports 25, 465, and 5875 How to Choose the Right Email Port for Your Server Email communication relies on various protocols to transfer messages between servers and…
How to Monitor MySQL Performance on VPS
What you will read?1 Using MySQL Performance Schema for Monitoring2 Real-Time Monitoring with Tools like MySQL Workbench3 Why Monitoring MySQL Performance is Crucial on VPS4 Setting Up MySQL Query Profiling5 Using MySQL Slow Query Log for Performance Insights6 Using Third-Party Monitoring Tools for MySQL7 Setting Up Alerts for MySQL Performance Issues Monitoring MySQL performance on…