Rackspace is dead. Microsoft killed it to take the $$$millions$$$ that Rackspace made reselling OUTLOOK EMAIL.
IF you are a RACKSPACE client, you NEED to migrate to Gmail or O365 NOW. RACKSPACE will shake the ransomware trap that Microsoft dropped them into.
Migrate now. Don’t wait any longer. RACKSPACE might fix the problem in a few weeks, but they will never be free of the OUTLOOK ransomware holes that MS builds into Exchange Server software.
THE EMAIL MIGRATION PROCESS (at Ipsofacto)
STEP 1: Setup o365 environment and make DNS changes:
Off-hours/weekend: 4 hrs
STEP 2: Remotely re-create high priority email profiles on office computers:
Off-hours/weekend: 2 hrs
STEP 3: Onsite Monday for support:
STEP 4: Export important/designated email from local computer PST files and import into o365 accounts:
3 hrs-6 hrs+