Marketing Cloud instance with multiple business units
Different primary sendout domains used in every BU
Sendout volume to low in one business unit to keep IP warmed up
It is desired to have a dedicated IP that that is shared with other BUs in the same Marketing Cloud instance, so the IP can be kept warmed up and the responsibility for sender reputation remains within the instance/corporation. Due to low sendout volume per BU a dedicated IP per BU/SAP (sender authentication package) isn't possible and sharing an IP with other Marketing Cloud customers/instances isn't desired either.
Is it possible to have a dedicated IP that is shared across multiple business units, which are each using different sendout domains and SAPs (sender authentication packages)?