The Simple Network Management Protocol (SNMP) is an application layer protocol that facilitates the exchange of management information between network devices. It is part of the Transmission Control Protocol/Internet Protocol (TCP/IP) protocol suite.Two versions of SNMP exist: SNMP version 1 (SNMPv1) and SNMP version 2 (SNMPv2). Both versions have a number of features in common, but SNMPv2 offers enhancements, such as additional protocol operations.
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ConfigServer Firewall (csf)

The mains scripts provided by the csf are:

# Straight-forward SPI (Stateful Packet Inspection) iptables firewall script.
# Daemon process that checks for login authentication failures for:

* courier imap and pop3
* ssh
* non-ssl cpanel / whm / webmail (cPanel servers only)
* pure-pftd
* password protected web pages (htpasswd)
* mod_security failures

# POP3/IMAP login tracking to enforce logins per hour
# SSH login notification
# Excessive connection blocking
# WHM iptables report log (cPanel servers only)
# Block traffic on unused server IP addresses - helps reduce the risk to your server
# Alert when end-user scripts sending excessive emails per hour - for identifying spamming scripts
# Suspicious process reporting - reports potential exploits running on the server
# Excessive user processes reporting
# Suspicious file reporting - reports potential exploit files in /tmp and similar directories
# Directory and file watching - reports if a watched directory or a file changes
# Server Security Check - Performs a basic security and settings check on the server (cPanel servers only)
# Alert sent if server load average remains high for a specified length of time
# mod_security log reporting (if installed)

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Introduction

This article explains how to migrate email accounts/mailboxes from a sendmail server to a Qmail server. A challenging task for any sysadmin implementing a Migration would be to migrate all the email accounts from one Mail server to another preserving all the settings, such as usernames and passwords.

This document helps you, only if your Qmail system is installed with VpopMail (not VmailMgr). Installing and configuring qmail+vpopmail is out of the scope of this article.(Refer to qmailrocks.org and lifewithqmail.org to install Qmail and Vpopmail) This article exclusively covers only the Migration aspects.

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