Cyrus-imapd 2.4.17: processes stick on mailbox locking resulting in total mailsystem failure

[Simon Matter]

> Hi Ellie
>
> Thanks a lot, I will try to build and test 2.4.20

Maybe try this:

http://www.invoca.ch/pub/packages/cyrus-imapd/RPMS/ils-7/SRPMS/cyrus-imapd-2.4.20-2.el7.src.rpm

Regards,
Simon