Symptoms

Microsoft Exchange Server 2019 Sizing Calculator produces unsupportable results for mail.que database size without generating an error or warning message. The mail.que database that exceeds 2 TB is still supported.

Resolution

To fix this issue, install the Cumulative Update 5 for Exchange Server 2019 or a later cumulative update for Exchange Server 2019.

References

Learn about the  terminology that Microsoft uses to describe software updates.

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