| 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. | |