| Event Id | 1057 |
| Source | IMAP4SVC |
| Description | The server certificate for instance instance has expired or is not yet valid. |
| Event Information | According to Microsoft: EXPLANATION: Either this is the first day the certificate is valid, or the certificate has expired. USER ACTION: If this is the first day the certificate is valid, no user action is required. If the certificate has expired, renew your certificate. |
| Reference Links | Exchange (IMAP4SVC) |
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