A resource limit has been reached when attempting to open an association. Number of sessions configured: {value}. [{value}{value}{value}{value}] (14)

Details
Product: Exchange
Event ID: 3120
Source: MSExchangeMTA
Version: 6.0
Component: Message Transfer Agent
Symbolic Name: MTA03120
Message: A resource limit has been reached when attempting to open an association. Number of sessions configured: {value}. [{value}{value}{value}{value}] (14)
   
Explanation
The message transfer agent (MTA) may have stopped due to a resource shortage. The MTA is trying to add local resources for remotely hosted connectors, such as the Internet Mail Service or the MS Mail Connector.
   
User Action
When an installation has several gateways and connectors configured, additional resources may be required. You can modify the registry to avoid this resource shortage. Contact Microsoft Product Support Services for assistance.

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