Hello,

I have been tasked with creating about 160 Exchange contacts. I'm finding that some of the email address listed are secondary email addresses for other users. I am in need of assistance for the following.

- Determine which addresses on my list are already in Exchange as secondary SMTP addresses for different contacts/mailboxes.

- For the addresses that are not in Exchange I will need to mass create them.

- For the existing contacts, I will need to delete the secondary SMTP that matches ones in my list and create a new contact for the SMTP.

I have already created a CSV of the contacts. Really not sure how to work this one. Any assistance would be appreciated.

Thanks in advance,

Hi,

From your description, I recommend you use the following cmdlet to get all the existed SMTP addresses, and then compare them with the email addresses you want to create. Verify if there is any duplicated addresses.

Get-Mailbox -Filter {emailaddresses -gt 1} | Select EmailAddresses

Hope this can be helpful to you.

Best regards,