Alter Exchange 2013 blocking of emails with invalid addresses

Our Exchange server is currently blocking messages that include even one invalid recipient address. I need to increase this threshold but can't find where this is configured at.
callworthAsked:
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Minecraft_ EndermanCommented:
Check transport rule:

Get-Transportrule

Check Sender filtering:

Get-SenderFilterConfig
Jian An LimSolutions ArchitectCommented:
I will think it is recipientfilterconfig

get-RecipientFilterConfig | fl
look for recipientvalidationenabled



to undo,
Set-RecipientFilterConfig -RecipientValidationEnabled $false

there is no threshold to avoid this. The reason is the email consist of undeliverable content, the whole email will be blocked

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