Our AD server cannot replicate with corporate AD server

[Phu Tran1]

Dear Support Team, Our Active Directory (AD) server is currently experiencing replication issues with the corporate AD server. Upon reviewing the logs, I noticed an issue that I believe requires support assistance. I've already attempted to ping and perform port queries (TCP and UDP) to the Corporate AD, and everything seems to be working fine from our end. However, it appears that from the corporate side, they can ping our server but are unable to perform a port query. I already open all the port from my AD server firewall but still not workPlease assist me in check this issueThe File Replica

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