Hi All,
Ok so some background info on an issue I'm currently trying to fix.
In my previous role I was the sysadmin for a small firm which had on-prem Exchange 2007. Two weeks into my notice period they decided to start the migration from Exchange 2007 to Office 365 after the on-prem server was deemed to be on its last legs (Which I warned about after a major crash around 2 months before I handed my notice in). Fortunatley they hired an external consultancy company to perform the migration after I left the role.
They have a .local domain named after their primary company name (domain1.co.uk). So the AD domain is domain1.local and the website and email domain name is domain1.co.uk.
They also have a second domain name for a smaller sister company, let's call it domain2.co.uk, this is for website and email mailboxes as well.
Ok, so we have...