Need BIG HELP: Mail blocked - pending 6 MB...

MBProR 13 "(2015)

3.1 GHz, Ram 16

OSX10.11.5

I have a question email-hanging, now 6 months pending...  It began after

upgrade to El Capitan.

Consistency during the reinstallation of a new system is a popup window that reads:

Kinke.kext, and Klif.kext (same message for both):

Some system extensions are not compatible with this version of Mac OS X and cannot be used:

System extension cannot be used

The extension of the system "/ System/Library/Extensions/klnke.kext" has been successfully installed

and cannot be used. Please try reinstalling it, or contact the vendor of the product for an update.

First of all, I have no idea what app that they belong.  I tried to remove these unknowns by various means

but by chance, they reappear later.

Could be the source of the mail suspended; or are they related to some other independent issue which is not apparent?

I really appreciated any help on these mystery extensions, i.e. also help get the

Mail does not hang.  (When he and system preferences hung grab ~ 11 GB of ram and fan snoring fast;)

After about 2 minutes the fan finally calms and Mail will open.)  I use by air because I don't want to get dirty

Mail beyond repair, but the time has come to resolve this frustration ;)

Thank you very much.

Hello

Restore OS X using OS X Recovery.

Tags: Mac OS & System Software

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