Mac Mail : SMTP is Offline. How to Get SMTP Online?

Lot of Mac users faced issue when sending out email in Mail app on Mac OS X Yosemite, Mavericks and Mountain Lion. SMTP served messed with wrong accounts used for different servers.

Solution 1:-

  1. Open Mail app.
  2. Go to Preferences .
  3. In Accounts Tap, choose the account which Outgoing Mail Server (SMTP) labeled as Offline.
  4. Click the SMTP server and choose Edit SMTP Server List from the list.
  5. Fill the right username and password.

Solution 2:-

  1. Quit Mail app.
  2. Go to Applications > Utilities > Keychain Access and delete all SMTP passwords from keychain.
  3. Enter the name of your SMTP server in keychain search box like or
  4. Search and find the entry which starts with smtp://. Copy and store the password in your hard  drive different location (for safety).
  5. Delete all relevant password entries for SMTP servers.
  6. Open Mail app and go to Preferences -> Accounts tab.
  7. Choose you account and choose your SMTP server from Edit SMTP servers list.
  8. Re-enter password you just deleted.

Solution 3:-

  1. Go to Apple menu -> Force Quit.
  2. Choose Mail app and select Force Quit.
  3. Restart your computer.
  4. Open Mail app and check your issue.

Solution 4:-

Go to Network Preferences -> Advanced section of Ethernet and WiFi interfaces. Add the following DNS addresses.


Solution 5:-

  1. Go to Mail Preferences.
  2. From the left side list, select the account which cause issue.
  3. Choose “Edit SMTP server List” from Outgoing mail server drop down menu.
  4. Correct username by appending domain name 9Ex: or your own domain).
  5. Re-enter password.

If you knew any other solutions for SMTP server offline Mac mail issue, inform us via comment.

2:13 pm

13 responses to Mac Mail : SMTP is Offline. How to Get SMTP Online?

I have a serious "Offline" Problem. In spite of trying all the options, the Outgoing Mail Server remains "Offline" only. Initially it does look like it will work, but after a while it turns to "Offline". I have Gmail account and I can only receive e-mail but can not send out. Surprisingly, it does work on my iPhone as well as on iPad, but doesn't work on MacBook Air.

This has happened after my office e-mail was changed to two step security(which is a company e-mail but through gmail only)successfully but my personal gmail id has this problem of going "offline"

Can you help ??

I had been fighting with this for ages and tried all of the solutions listed to no avail. I finally went back into the server list again, opened up my desired offline server and removed my password. I realized that my working servers did not have a password for the smtp server. That did the trick. I tested and tested and I am back in business!

Thank you thank you Melissa! Been dealing with this for weeks on one computer and tried everything. Back on line correctly. So greatful

Solution #1 and changed my server name. It's working now. Problem started after the latest update, come to think of it. THANK YOU!

Solution #1 No work.
Melissa idea…can't change password because password doesn't come up. Yes problem started with update

I fixed he problem by deleting the offline status email from the system and reinstalling it again.

Click Mail, then Open Preferences from drop down menu, choose your account, choose server settings over right side of window should see SMTP server/outgoing mail server with a drop down list, click drop down edit SMTP then type in new password then choose ok.

I found that quitting and then restarting Mail caused it to try again to send the messages that were previously stuck. It then asked me for the password, which I had typo'd sometime previously, and when I had located the correct password, things got sent out ok.

You might have to delete a password in Prefs for that account and it should then ask you for one

Could it be something to do with syncing through iCloud? If mail prefs are synced then perhaps the port number is being changed. My SMTP server requires I use port 465 on my iMac using Mail but on the iPhone it is 587. I have found some of my email accounts on my iMac set to 587, but not all.

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