Mac Mail – Cannot Send Message Using the server Carrie SmahaUpdated on August 16, 2021 1 Minute Read Email Client: Mac Mail Error Message: Cannot send message using the SMTP server Solution: You will need to update the SMTP server settings – most likely you’re dealing with a port 25 blocking issue. If you are using a SSL on your site you can use the SSL port 465. Make sure the box to use SSL is checked. If not, you can use port 587 and leave the box unchecked. The correct ports are below: Non-SSL outgoing SMTP: 587 SSL enabled outgoing SMTP: 465 Share this Article Carrie Smaha Senior Manager Marketing Operations Carrie Smaha is a digital strategy, web development, and SEO leader with 20 years of experience. She built her foundation in fast-paced agency environments before moving in-house to InMotion Hosting, where she leads go-to-market programs, agency initiatives, and technical product marketing that connects product capability to real customer decisions. More Articles by Carrie Related Articles Transferring Emails from Your Old Host to InMotion Hosting How to Setup Office 365 DNS Records How to fix OLMAPI32.dll and WWLIB.dll error in Outlook 2013 How to Setup Outlook 2016 for Mac Issues with Outlook 2007 Running on Windows 10 Outlook not working after installing Windows 10 IMAP Issues Affecting Outlook 2013 and Office 365 Outlook 2013/Office 365 – Subscribing to your Inbox How to create an email signature in Outlook 2003 How to create an email signature for Mac in Outlook 2011
