IMAP Communication Problems - IMAP Down Again

IMAP Communication Problems - IMAP Down Again

We are experiencing the same problems over the last week or so that were supposedly 'solved' according to this thread.
Zoho Imap Down Again
This is affecting attempts to use IMAP on multiple ISPs and users so is definitely narrowed down to Zoho problems.
We are in Australia which seemed to be a less affected timezone than others in this thread, however, the problem seems to as bad as it was for us all over again.

The problem is most evident to users as:
  1. checking email fails with an authentication error (invalid password)
  2. attempting to move a number of emails from one imap folder to another fails before the move is completed, thus the emails do not end up moved and only the emails up until the fail end up copied to the new location
Is this a problem that has also resurfaced for others also?