Hi Young,
Sorry for only coming back to you now, I was unfortunately very busy the last couple of days.
1.1 Both users exist’s for more than 3years. Dir sync is new though (the setup was done approximately 3 months ago)
1.2 Incorrect
2.1 That is correct, both domains is used but a single user will only have one UPN suffix
2.2 I spoke to the infrastructure admins and they confirmed when creating an AD to never use the same alias for a user but we do allocated more than one email address to some of the users (eg. eugenem@contoso.com and the same user will have different email addresses assigned to him –
SMTP:EUGENEM@contoso.com (primary)
Smtp:EUGENEM@pepstores.com
Sip:......)
2.3 No they haven’t
2.4 I did have a look at the MOSDAL support Toolkit but not extensively
Thank you