Office 365 mail statistics per domain

Hi,

Customer has changed his main smtp domain from companyA.com to companyB.com. This has been reflected for each user by having a PrimarySMTPAddress like user@companyB.com while the former email address user@companyA.com is now an alias on the mailbox.

I would like to know how many emails are sent to the old addresses vs the new ones.

Any help would be appreciated.
xmiAsked:
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Vasil Michev (MVP)Commented:
There are no built-in reports that can give you this info, but you can create a similar one via this script: https://gallery.technet.microsoft.com:443/office/Office-365-Mail-Traffic-afa37da1
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xmiAuthor Commented:
Customer dumped the question. Assigning points to Vasil since it was the close to what we were looking for.
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