我是ssl证书的新手，在我们的服务器（1.1以下的规格）中，一个月前“发送邮件”服务停止工作。我按照日志，似乎ssl证书存在问题（Trace低于1.2）
1.2追踪：
Caused by: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: Certificate signature validation failed
at com.sun.net.ssl.internal.ssl.BaseSSLSocketImpl.a(DashoA12275)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.a(DashoA12275)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.a(DashoA12275)
at com.sun.net.ssl.internal.ssl.SunJSSE_az.a(DashoA12275)
at com.sun.net.ssl.internal.ssl.SunJSSE_az.a(DashoA12275)
at com.sun.net.ssl.internal.ssl.SunJSSE_ax.a(DashoA12275)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.a(DashoA12275)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.j(DashoA12275)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.a(DashoA12275)
at com.sun.net.ssl.internal.ssl.AppInputStream.read(DashoA12275)
at com.sun.mail.util.TraceInputStream.read(TraceInputStream.java:97)
at java.io.BufferedInputStream.fill(BufferedInputStream.java:183)
at java.io.BufferedInputStream.read(BufferedInputStream.java:201)
at com.sun.mail.util.LineInputStream.readLine(LineInputStream.java:75)
at com.sun.mail.smtp.SMTPTransport.readServerResponse(SMTPTransport.java:1440)
... 36 more
Caused by: sun.security.validator.ValidatorException: Certificate signature validation failed
at sun.security.validator.SimpleValidator.engineValidate(SimpleValidator.java:137)
at sun.security.validator.Validator.validate(Validator.java:202)
at com.sun.net.ssl.internal.ssl.X509TrustManagerImpl.checkServerTrusted(DashoA12275)
at com.sun.net.ssl.internal.ssl.JsseX509TrustManager.checkServerTrusted(DashoA12275)
... 48 more
Caused by: java.security.NoSuchAlgorithmException: 1.2.840.113549.1.1.11 Signature not available
at java.security.Security.getEngineClassName(Security.java:672)
at java.security.Security.getEngineClassName(Security.java:683)
at java.security.Security.getImpl(Security.java:1132)
at java.security.Signature.getInstance(Signature.java:169)
at sun.security.x509.X509CertImpl.verify(X509CertImpl.java:425)
at sun.security.x509.X509CertImpl.verify(X509CertImpl.java:383)
at sun.security.validator.SimpleValidator.engineValidate(SimpleValidator.java:135)
... 51 more
引起我注意的是“签名不可用”所以我检查了很多但是似乎无法找到这个问题的根源，没有人对服务器证书或java.security文件做过任何更改，当我发送邮件时，似乎也会出现错误的代码。奇怪的是，一切都在我的测试服务器上运行，但不在我的生产服务器上。
答案 0 :(得分：2)