Quickly press and release Option + Command + Esc key together.From the Force Quit list select the Mail app.Now give the Force Quit option.After that reopen the Mail app and check if the problem is still occurring. or your own domain).Re-enter the password. Go to Mail Preferences.From the left side list, select the account which causes the issue.Choose “ Edit SMTP Server List” from the outgoing mail server drop-down menu.Correct the username by appending domain name 9Ex: See more: Download Gmail For Android Free, Gmail (Apk)Ĩ.8.8.88.8.4.4 Solution 5: Use Mail Preferences Go to Network Preferences -> Advanced section of Ethernet and WiFi interfaces. Go to Apple menu -> Force Quit.Choose Mail app and select Force Quit.Restart your computer.Open the Mail app and check your issue. See Also: How do i add a second email address to my gmail account? Solution 3: Force Quit your Mac Copy and store the password in your hard drive in the different locations (for safety).Delete all relevant password entries for SMTP servers.Open Mail app and go to Preferences -> Accounts tab.Choose your account SMTP server from the Edit SMTP servers list.Re-enter the password that you just deleted. Quit Mail app.Go to Applications > Utilities > Keychain Access and delete all SMTP passwords from the keychain.Enter the name of your SMTP server in keychain search boxes like or and find the entry which starts with SMTP ://. Open Mail app.Select Preferences.In the Accounts tab, choose the account which is Outgoing Mail Server (SMTP) labeled as Offline.Click the SMTP server and choose Edit SMTP Server List from the list.Enter the right username and password. Watching: Solve why is my smtp server offline in apple mail Solution 1: Edit SMTP Server list Here I will show you how to fix this issue with simple solutions. This problem will occur if the SMTP server is messed with the wrong accounts to use different servers. A lot of Mac users faced this issue when sending an email in the Mail app on Mac.

Mac smtp server offline