Force Email Exim Authentication Updated on August 16, 2021 by InMotion Hosting Contributor 0 Minutes, 40 Seconds to Read Security Advisor and monthly WebHost Manager (WHM) security reports alone can teach users much about navigating WHM and enhancing web security. Below we cover how to solve the warning that Exim mail authentication isn’t required to connect. Note: You’ll need root access to complete these steps. Enable Exim Authentication Log into WHM. Select Tweak Settings from the left. Search “START” and press On beside: Require clients to connect with SSL or issue the STARTLS command before they are allowed to authenticate with the server. Press Save at the bottom. For improved security, see our Security Advisor article on the MySQL service alert warning and installing ConfigServer & Firewall. You can consider creating an account with Sucuri for enhanced security. In the next guide, we’ll show you How to run Exim on an additional port. Share this Article InMotion Hosting Contributor Content Writer InMotion Hosting contributors are highly knowledgeable individuals who create relevant content on new trends and troubleshooting techniques to help you achieve your online goals! More Articles by InMotion Hosting Related Articles How to Use InMotion Email with Gmail (2026 Update) SpamAssassin: Fighting Spam How to Configure Mailbox Quota Notifications How to Import Email Accounts and Forwarders into cPanel How to Login to SquirrelMail Set Up MX and SPF Records for InMotion Hosting Professional Email How to Purchase InMotion Hosting Professional Email in AMP How to Fix the “550 No Such User Here” Email Error How to Setup an Email AutoResponder in cPanel Logging into Horde
