Issue
Large Items are not received/ingested, because of size limits.
Solution
Sometimes it is necessary to increase the item size limits of Exchange to be able to receive/ingest larger items.
Increase the Exchange message size limits:
1. Open the Exchange Management Shell and enter following commands to get the current message size limits:
Get-Transportconfig | ft MaxSendSize, MaxReceiveSize Get-Receiveconnector | ft Name, MaxMessageSize Get-Sendconnector | ft Name, MaxMessageSize Get-Mailbox Administrator |ft Name, MaxSendSize, MaxReceiveSize
2. Increase message size limits:
Get-TransportConfig | Set-TransportConfig -MaxSendSize XXMB -MaxReceiveSize XXMB Get-ReceiveConnector | Set-ReceiveConnector -MaxMessageSize XXMB Get-SendConnector | Set-SendConnector -MaxMessageSize XXMB Get-Mailbox | Set-Mailbox -MaxSendSize XXMB -MaxReceiveSize XXMB
Increase IIS limits to allow accepting payloads:
1.Maximum accepted request and content length:
2. Maximum received message size:
You can find more about the settings of Message Size Limits for Exchange Web Services (EWS) for Exchange 2010 in Microsoft technote.
You can find more about Exchange 2010 Message size limits in Microsoft technote.
You can find more about Exchange 2013 Message size limits in Microsoft technote.
You can find more about Exchange 2016 Message size limits in Microsoft technote.
You can find more about Exchange 2016 and how to configure client-specific message size limits in Microsoft technote.
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