What happened:
1) Created external contact "a.example" with mail address "a.example@domain.com"
2) Sent Mail to that user: ok
3) Deleted external contact from step 1
4) created Office 365 user with Exchange Online license w/ same alias and email id as from step 1
5) Replied to mail from step 2 - undeliverable
6) Sent new mail to "a.example@domain.com" - ok
1) Created external contact "a.example" with mail address "a.example@domain.com"
2) Sent Mail to that user: ok
3) Deleted external contact from step 1
4) created Office 365 user with Exchange Online license w/ same alias and email id as from step 1
5) Replied to mail from step 2 - undeliverable
6) Sent new mail to "a.example@domain.com" - ok
Is there any way to avoid this? Maybe via powershell, add additional emailaddress there?
ANy help highly appreciated!
