AAD Connect - enhance "large object"
In latest AAD Connect 18.104.22.168 we are not able to fully synchronize the whole 400 proxyAddresses of a MailboxUser from OnPrem to AzureAD.
Exchange Online supports 400 proxyAddresses regarding this article:
Unfortunately AAD Connect stops synching at 333 proxyAddresses. The limit may not be exactly the same in all environments, as I was told, this is due to a cache limit in AAD Connect.
My support case number 119070222001318
"Also, I have discussed this issue with my Technical Lead in copy @Obaro Olori (Tek Experts), I was informed that the synchronization error of large attribute on the synchronization service is as a result of character and memory size allocated to attributes allowed to synchronize from on-premises AD to Azure AD via the AD Connect. If a large number of attributes, in this case, proxy address, are allowed to synchronize via AD Connect, it is likely to cause an error in Exchange online and o365 portal."
It would be great, if we could raise the AAD Connect Cache size to fully utilize the 400 proxyAddresses in Exchange Online.