Some users have reported that Mail.app fails to retrieve all mail or certain messages after the update to Mac OS X 10.6.3. Mail.app may also stop automatically checking for new mail (i.e. it will only receive mail when the check mail button is clicked or the app is quit then re-launched.
Re-apply Mac OS X 10.6.3 Combo Update. Some users have experienced success in resolving this issue by using what is perhaps the trustiest post-update-issue routine: re-applying the Mac OS X 10.6.3 update. Simply download the 785 MB file and run the installer.
Change DNS servers. Failing the aforementioned, try changing your systems’s DNS servers to those offered by OpenDNS. To do so,
- Open System Preferences and click “Network”
- Select your connection method (AirPort, Ethernet, etc.)
- Enter the following items in the “DNS Server” field: 184.108.40.206, 220.127.116.11
- Click Apply
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Obsessed with tech since the early arrival of A/UX on Apple, Sudz (SK) is responsible for the editorial direction of AppleToolBox. He is based out of Los Angeles, CA.
Sudz specializes in covering all things macOS, having reviewed dozens of OS X and macOS developments over the years.
In a former life, Sudz worked helping Fortune 100 companies with their technology and business transformation aspirations.