I have set up email forwarding on testmailbox@abc.com (Which is a separate exchange forest) towards testmailbox@xyz.com (O365 hybrid different forest).
Condition-1: - If i send an email from Gmail to testmailbox@abc.com which is then forwarded to testmailbox@xyz.com successfully but is considered as Spam
Condition-2: - If is send an email from any mailbox located in abc.com forest, it gets delivered in inbox
Condition-3: -If i send any email from Gmail to testmailbox@xyz.com, it gets delivered in Inbox
Questions: - What i can do to have emails from gmail routed to abc.com domain later forwarded to xyz.com land in inbox?