cPanel 11.52 update and SMTP Authentication Issue Updated on October 13, 2015 by InMotion Hosting Contributor 1 Minutes, 7 Seconds to Read cPanel Update SMTP Authentication – Possible SMTP Authentication issue due after cPanel update Status: Workaround provided for VPS and Dedicated server Who is affected? Email accounts on hosted sites that have been updated to cPanel 11.52 InMotion servers use a current configuration to allow SMTP authentication if the user has already authenticated via POP in the last 30 minutes. This option is unfortunately automatically disabled in version 11.52. If SMTP authentication is not properly configured in mail clients, then there may be issues with sending mail. There are a few recommended ways to fix the issue: Force SMTP authentication in the customer’s mail client. The default SMTP setting may not always be the best way to configure email clients to send mail. This may be of more importance in applications such as ecommerce where there is a choice in how to send email notifications. In these cases, make sure to use SMTP authentication for sending mail. VPS or Dedicated customers can change the settings in WHM by doing the following: Go to WHM > Tweak Settings Enable this setting: Allow users to relay mail if they use an IP address through which someone has validated an IMAP or POP3 login within the last our. The Systems team is evaluating the update and will make changes if necessary. For more information about the cPanel update, please see cPanel 11.52 Release Notes. 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 Setup an Email AutoResponder in cPanel How to Set Up the cPanel DAV Daemon How to Install WordPress using Softaculous How to Migrate Your Website Using cPanel How to Use Git Version Control in cPanel How Much Will You Pay For cPanel Licenses? Wildcard Subdomains and DNS How to Create a Subdomain in cPanel Cache Manager for cPanel How to Setup DMARC Records in cPanel
