請問這是一種退信攻擊嗎?
exchange server 2019該如何去攔截無寄件者的信件?
設一條規則寄件者=<>,仍然攔截不到
請問有好方法嗎?謝謝!
使用PowerShell建立規則
New-TransportRule -Name "Is Empty Mail" -Condition @( New-TransportRulePredicate -SenderAddressMatchesPatterns "^$" )
-Action @(
New-TransportRuleAction -RejectMessageReasonText "Empty sender addresses are not allowed."
)