Current version of Outlook for Mac computers: Outlook 2019 or Outlook 365 for Mac. Note that these versions require one of the last 3 Moc OS with Intel or M1 chips.
"Outlook on the Web" is another option for connecting Macintosh computers to Exchange Server.
Discussion groups and Mailing lists
The Microsoft Answers forum for Office for Mac:
Microsoft Answers forum
More Information
Outlook2Mac -- Exports Outlook data from PC to Mac-compatible mbox, iCal, and vCard files for import into Entourage and other programs