Performing an Exchange 2003 to 2010 migration, with later plans to migrate to Office 365.
While performing Exchange 2010 SP3 install on a new server, I get this error during install: (I removed the domain name used)
Beginning processing New-AcceptedDomain -Name:'xxx.com' -DomainName:'xxx.com' -DomainType:'Authoritative'
[07/14/2014 19:30:30.0795]  Processing object "xxx.com".
[07/14/2014 19:30:30.0827]  Could not convert property DisabledEmailAddressTemplates to type ProxyAddressTemplate. Error while converting string ':OPTIO' to result type Microsoft.Exchange.Data.ProxyAddressTemplate: E-mail address template ":OPTIO" has an empty prefix or an empty address template string. Property Name: DisabledEmailAddressTemplates
I get this error repeated on ALL accepted e-mail domains. I can't see any reference to :OPTIO in any e-mail recepient policy...
Also, ran a report to export all SMTP addresses used (with alias) and nothing...
I am stuck...any ideas?