Dovecot Sieve Filters Roundcube: Mail Rules on cPanel
cPanel & WHM 132 moved to Dovecot 2.4 and enabled Sieve filtering with a managesieve plugin in Roundcube. This guide covers enabling the feature, creating filters in Roundcube, how Sieve coexists with legacy cPanel filters, and the server-side files involved.
September 29, 2026
cPanel Disk Full: Safe Cleanup of Logs, Backups and Mail
A safe order of operations for reclaiming space on a cPanel server that has hit 100%, covering the fastest wins in logs, backups, the Exim queue, cPanel's own caches and package cache, and how to find the account-level growth that caused it.
September 29, 2026
DirectAdmin Rspamd vs SpamAssassin: DKIM and DMARC Setup
How to choose between Rspamd and SpamAssassin on a DirectAdmin mail server, switch between them with CustomBuild, and set up DKIM signing, SPF and DMARC records so that outbound mail from hosted domains authenticates correctly.
September 29, 2026
DirectAdmin Old Certificate After Renewal: 3 Service Fixes
Why a renewed certificate can appear on the website but not on SMTP, IMAP or port 2222 on a DirectAdmin server, where each service reads its certificate from, and how the 1.710 sync and mail SNI settings fit in.
September 29, 2026
DirectAdmin External Mail: Google Workspace and M365 Without Problems
How to point a DirectAdmin-hosted domain's mail at Google Workspace or Microsoft 365 so that both inbound delivery and mail sent from the website's PHP land in the external mailbox, and how the forced MX DNS check introduced in 1.703 changes the behaviour.
September 29, 2026
DirectAdmin mail delivery problems: forwarder loops, send-limit counting and outbound MX lookups
Three DirectAdmin mail faults that surface as bounces or silent non-delivery, explained through Exim's mainlog, the per-user send-limit files, the forwarder loop protection added in 1.693 and the FORCED_MX_DNS_CHECK behaviour from 1.703.
September 29, 2026
DirectAdmin Roundcube Branding: Custom Webmail URL
Pointing webmail.example.com and the panel's webmail link at Roundcube 1.7 on DirectAdmin, keeping custom config and logos safe from CustomBuild rebuilds, and using the one-click webmail login added in 1.688.
September 29, 2026
Exim Outbound Mail Limits WHM: Stop Spam Runs Fast
How to configure the WHM Tweak Settings and Exim options that limit outbound mail per domain, defer rather than reject over-limit senders, record the script or user that generated each message, and stop the web server user from sending mail directly to remote hosts.
September 29, 2026
IP Blacklist Check: Bulk IPs, CIDR Ranges and Domains (33 Lists)
Check up to 256 IP addresses, CIDR ranges, hostnames and domains against 30 IP blacklists and 3 domain blacklists at once, with reverse DNS, listing reasons, delisting links and CSV export.
September 29, 2026
Outgoing Spam cPanel: Find the Source and Stop It
Your IP landed on a blacklist, the Exim queue has 40,000 messages and every customer's mail is delayed. This is the order to check things in, with the exact commands, so you find the compromised account or script in minutes instead of hours.
September 29, 2026
Exim Mail Queue Report
Find out what is filling the Exim queue on a cPanel server: top senders, recipient domains, authenticated users, sending scripts and delivery errors from the last 24 hours, with an optional frozen-message purge.
September 29, 2026