All,
I am currently working with Splunk Add-on for Microsoft Office 365. The default regex in transforms.conf for extract_src_user_domain and extract_recipient_domain will only extract the last two parts of an email domain, resulting in domains like bank.co.in returning as co.in
Agree with @richgalloway This should be highlighted to Support as its Splunk Supported Add-on.
That is a Splunk-supported app so the best way to report a failure like this is to file a case with Splunk Support.
If you do not have a support entitlement, submit it at https://ideas.splunk.com.