データローダーで「Failed to send request to」エラーが発生する場合、エンドポイントURLやネットワーク設定、sdl.logの確認が必要です。
その要因として、以下の可能性が考えられます。
参考 : sdl.log の確認方法
sdl.log が以下の様に記録されているとした場合、Caused by: の後続のメッセージに着目します。
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2014-03-25 10:39:35,951 ERROR [main] client.PartnerClient runOperation (PartnerClient.java:332) - Error while calling web service operation: login, error was: Failed to send request to https://login.salesforce.com/services/Soap/u/29.0
com.sforce.ws.ConnectionException: Failed to send request to https://login.salesforce.com/services/Soap/u/29.0
at com.sforce.ws.transport.SoapConnection.send(SoapConnection.java:121)
at com.sforce.soap.partner.PartnerConnection.login(PartnerConnection.java:968)
...<中略>...
Caused by: javax.net.ssl.SSLPeerUnverifiedException: peer not authenticated
at com.sun.net.ssl.internal.ssl.SSLSessionImpl.getPeerCertificates(Unknown Source)
at org.apache.http.conn.ssl.AbstractVerifier.verify(AbstractVerifier.java:128)
...<略>...
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以下に各メッセージにおける原因や事例について掲載します。
000386183

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