hub transport Mail.que file large in size
Get-TransportConfig | select SafetyNetHoldTime
Set-TransportConfig -SafetyNetHoldTime 2.00:00:00
Check the SafetyNetHoldTime value. This parameter specifies how long a copy of a successfully processed message is retained in Safety Net. Unacknowledged shadow copies of messages auto-expire from Safety Net based on adding the values of the SafetyNetHoldTime parameter and the MessageExpirationTimeout parameter