* Is it safe to run YUM update? / How do I safely update CentOS? (applies to version 3.0.0.8 and below) * Is it safe to run YUM update? / How do I safely update CentOS? Yes starting in 3.0.0.9 with exclusion list defined in /etc/yum.conf intact. * Increasing Partition Sizes

* How to enable port 587 and TLS for sending and receiving emails * Configure non standard SMTP ports for mail transport * Increase the Max Message Size for "552 5.3.4 Error: message file too big" * Removing Message-Id headers for messages re-released to MS Exchange server

* Customizing spamassassin scores * Spamassassin: customize the rulesets correctly * URIBL_BLOCKED? Well, here is the fix.

* Black/Whitelist * How do I use MCP to block offensive content? * Integrate with Active Directory (efa users -- older efa versions) * Integrate with Active Directory on 3.0.0.9 * Integrate with Active Directory (postfix relay_recipients) - (references an http://vnlinuxworld.blogspot.hk/2010/07/automatically-update-recipient-maps.html external script for generating the relay_recipients file) * Lost your password and need to reset it? (older versions) * Lost your password and need to reset it? Use EFA-Configure and reset your password :) * Mass import whitelists and blacklists * MailScanner: Message contained password-protected archive - how do I let these messages through? * Modify the number of days in the quarantine reports

* After installing EFA, what should do I do? * Enable Quarantine Reports for All Users

* Mass Import Users script * Spammer Alert Reporting