Recipient/Sender verification issue from older cPanel v11 CURRENT

If you are finding :fail: messages ending up in the exim queue, then the cause is most likely a bug that was in an older cPanel v11 CURRENT release that introduced a miss-configuration in exim.conf. This has been fixed in the latest builds, but if you were an early v11 adopter your exim.conf may be incorrect.You can check this by going into the WHM > Exim Configuration Editor > Advanced Mode and scrolling down to the ACL section. Then check for the following lines:require verify = recipientand:require verify = senderBoth lines will probably have related message and comments around them. You need to ensure that the recipient verification comes before the sender verification. If it doesn’t, switch the blocks around and save the configuration.This problem is also responsible for root email delivery failures for the root crontab jobs and with the global abuse and postmaster /etc/myaliases file setup that we perform.