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My 10.8.2 MacBook Air is having constant connection errors in when the computer has been sent to sleep or hibernate.

A small alert triangle appears next to all account names (I have several) in the sidebar. Mail reception only resumes after quitting and relaunching

I have verified that the net connection is up, and that connections settings and credentials are okay. Similar problems described here.

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2 Answers 2

up vote 1 down vote accepted

This might seem weird and unlikely, but these steps (originally written to restore broken Dictation) fixed it for me:

  1. Go to ~/Library/Preferences ( ++G )
  2. Locate and move it to the Trash
  3. Open Dictation & Speech preference panel, disable dictation
  4. Reboot
  5. Re-enable Dictation & Speech.

Any hints on why this is working are very welcome!

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Worked for me too, thanks. The steps here should be quit/launch Mail instead of Dictation. – Semyon Perepelitsa Sep 20 '13 at 18:33

It's an SSL issue that takes a few steps to fix.

1) Go to the ISP of each email account and find the actual server name for your account. Change your incoming and outgoing email servers from to The server name often has a number in it. (e.g. Do this for each account.

2) Quit Mac Mail. Open Keychain Access (Applications --> Utilities). At the left click on Logins, then below click on Certificates. Find all email certificates, hold the option key down while clicking on them, then select Delete to get rid of them. Quit Keychain Access.

3) Open Mac Mail. For each account, you will be asked to enter your password again. Click on the Certificate button at the bottom of the window, click the Trust triangle, then check Always Trust. Do this for all incoming email. Then send a test email from each account, and do this process for all outgoing email.

4) Open Keychain Access and find your new login certificates. Double click each one, then click the Trust triangle, and select Always Trust on the top scrollbar. Close the window and enter your keychain password to Update. Do this for each email certificate.

It's a pain in the neck, but after all this, your email should work fine with again with SSL.

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Could you explain a bit more what you mean with item number one? "Change your incoming and outgoing email servers from to" ... I don’t get what is to be changed here actually. Thanks! – myhd Mar 10 '13 at 16:23

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