| Event Id | 754 |
| Source | MSExchangeTransport |
| Description | SMTP could not connect to any DNS server. |
| Event Information | CAUSE: Simple Mail Transfer Protocol (SMTP) could not connect to any DNS servers. All DNS servers are down. RESOLUTION: Use nslookup.exe to verify that all DNS servers are up and reachable. |
| Reference Links | Microsoft product: Exchange Version: 6.5.6940.0 Event Source: MSExchangeTransport Event ID: 754 |
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