My Java app suddenly unable to send email using Amazon SES (AWS region us-west-1):
HTTP request: Connection refused (Connection refused)): software.amazon.awssdk.core.exception.SdkClientException: Unable to execute HTTP request: Connection refused (Connection refused)
2022-04-24T17:56:09Z app[0e57d191] sjc [info] at software.amazon.awssdk.core.exception.SdkClientException$BuilderImpl.build(SdkClientException.java:98)
2022-04-24T17:56:09Z app[0e57d191] sjc [info] at software.amazon.awssdk.core.exception.SdkClientException.create(SdkClientException.java:43)
2022-04-24T17:56:09Z app[0e57d191] sjc [info] at software.amazon.awssdk.core.internal.http.pipeline.stages.utils.RetryableStageHelper.setLastException(RetryableStageHelper.java:204)
2022-04-24T17:56:09Z app[0e57d191] sjc [info] at software.amazon.awssdk.core.internal.http.pipeline.stages.RetryableStage.execute(RetryableStage.java:83)
2022-04-24T17:56:09Z app[0e57d191] sjc [info] at software.amazon.awssdk.core.internal.http.pipeline.stages.RetryableStage.execute(RetryableStage.java:36)
2022-04-24T17:56:09Z app[0e57d191] sjc [info] at software.amazon.awssdk.core.internal.http.pipeline.RequestPipelineBuilder$ComposingRequestPipelineStage.execute(RequestPipelineBuilder.java:206)
2022-04-24T17:56:09Z app[0e57d191] sjc [info] at software.amazon.awssdk.core.internal.http.StreamManagingStage.execute(StreamManagingStage.java:56)
2022-04-24T17:56:09Z app[0e57d191] sjc [info] at software.amazon.awssdk.core.internal.http.StreamManagingStage.execute(StreamManagingStage.java:36)
2022-04-24T17:56:09Z app[0e57d191] sjc [info] at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallTimeoutTrackingStage.executeWithTimer(ApiCallTimeoutTrackingStage.java:80)
2022-04-24T17:56:09Z app[0e57d191] sjc [info] at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallTimeoutTrackingStage.execute(ApiCallTimeoutTrackingStage.java:60)
2022-04-24T17:56:09Z app[0e57d191] sjc [info] at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallTimeoutTrackingStage.execute(ApiCallTimeoutTrackingStage.java:42)
2022-04-24T17:56:09Z app[0e57d191] sjc [info] at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallMetricCollectionStage.execute(ApiCallMetricCollectionStage.java:48)
2022-04-24T17:56:09Z app[0e57d191] sjc [info] at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallMetricCollectionStage.execute(ApiCallMetricCollectionStage.java:31)
2022-04-24T17:56:09Z app[0e57d191] sjc [info] at software.amazon.awssdk.core.internal.http.pipeline.RequestPipelineBuilder$ComposingRequestPipelineStage.execute(RequestPipelineBuilder.java:206)
2022-04-24T17:56:09Z app[0e57d191] sjc [info] at software.amazon.awssdk.core.internal.http.pipeline.RequestPipelineBuilder$ComposingRequestPipelineStage.execute(RequestPipelineBuilder.java:206)
2022-04-24T17:56:09Z app[0e57d191] sjc [info] at software.amazon.awssdk.core.internal.http.pipeline.stages.ExecutionFailureExceptionReportingStage.execute(ExecutionFailureExceptionReportingStage.java:37)
2022-04-24T17:56:09Z app[0e57d191] sjc [info] at software.amazon.awssdk.core.internal.http.pipeline.stages.ExecutionFailureExceptionReportingStage.execute(ExecutionFailureExceptionReportingStage.java:26)
2022-04-24T17:56:09Z app[0e57d191] sjc [info] at software.amazon.awssdk.core.internal.http.AmazonSyncHttpClient$RequestExecutionBuilderImpl.execute(AmazonSyncHttpClient.java:193)
2022-04-24T17:56:09Z app[0e57d191] sjc [info] at software.amazon.awssdk.core.internal.handler.BaseSyncClientHandler.invoke(BaseSyncClientHandler.java:103)
2022-04-24T17:56:09Z app[0e57d191] sjc [info] at software.amazon.awssdk.core.internal.handler.BaseSyncClientHandler.doExecute(BaseSyncClientHandler.java:167)
2022-04-24T17:56:09Z app[0e57d191] sjc [info] at software.amazon.awssdk.core.internal.handler.BaseSyncClientHandler.lambda$execute$1(BaseSyncClientHandler.java:82)
2022-04-24T17:56:09Z app[0e57d191] sjc [info] at software.amazon.awssdk.core.internal.handler.BaseSyncClientHandler.measureApiCallSuccess(BaseSyncClientHandler.java:175)
2022-04-24T17:56:09Z app[0e57d191] sjc [info] at software.amazon.awssdk.core.internal.handler.BaseSyncClientHandler.execute(BaseSyncClientHandler.java:76)
2022-04-24T17:56:09Z app[0e57d191] sjc [info] at software.amazon.awssdk.core.client.handler.SdkSyncClientHandler.execute(SdkSyncClientHandler.java:45)
2022-04-24T17:56:09Z app[0e57d191] sjc [info] at software.amazon.awssdk.awscore.client.handler.AwsSyncClientHandler.execute(AwsSyncClientHandler.java:56)
2022-04-24T17:56:09Z app[0e57d191] sjc [info] at software.amazon.awssdk.services.ses.DefaultSesClient.sendTemplatedEmail(DefaultSesClient.java:3883)
2022-04-24T17:56:09Z app[0e57d191] sjc [info] at software.amazon.awssdk.services.ses.SesClientProducer_ProducerMethod_client_f0f3dcec0eb23dd4d306f0aa60e8d75af265eea6_ClientProxy.sendTemplatedEmail(Unknown Source)
It used to work, and it still works locally.
The env var secrets (AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY) are in place. I tried fly secret unset, throws different error, which means they got picked up.
What could be the issue?