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  1. ,
    via Stack Overflow by carlos

    Set the mail.smtp.ssl.trust system property to an smtp host, like smtp.gmail.com.

  2. ,
    Expert tip

    If you're using wiremock, configure your code to accept wiremock self-signed certificate or create a keystore and certificate that are trusted by your HTTP client and configure wiremock to use that

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via liferay.com by Unknown author, 1 year ago
PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
via Stack Overflow by Daniel N
, 1 year ago
PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:221) at sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:145) at sun.security.validator.Validator.validate(Validator.java:203) at com.sun.net.ssl.internal.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:172) at com.sun.net.ssl.internal.ssl.JsseX509TrustManager.checkServerTrusted(SSLContextImpl.java:320) at com.sun.net.ssl.internal.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:841) at com.sun.net.ssl.internal.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:106) at com.sun.net.ssl.internal.ssl.Handshaker.processLoop(Handshaker.java:495) at com.sun.net.ssl.internal.ssl.Handshaker.process_record(Handshaker.java:433) at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:818) at com.sun.net.ssl.internal.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1030) at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1057) at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1041) at sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:402) at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:170) at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:938) at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:234) at edu.yale.its.tp.cas.util.SecureURL.retrieve(SecureURL.java:84) at edu.yale.its.tp.cas.client.ServiceTicketValidator.validate(ServiceTicketValidator.java:212) at edu.yale.its.tp.cas.client.CASReceipt.getReceipt(CASReceipt.java:50) at edu.yale.its.tp.cas.client.filter.CASFilter.getAuthenticatedUser(CASFilter.java:455) at edu.yale.its.tp.cas.client.filter.CASFilter.doFilter(CASFilter.java:378) at com.liferay.portal.servlet.filters.sso.cas.CASFilter.doFilter(CASFilter.java:89) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188) at com.liferay.portal.servlet.filters.virtualhost.VirtualHostFilter.doFilter(VirtualHostFilter.java:142) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188) at com.liferay.portal.servlet.filters.sessionid.SessionIdFilter.doFilter(SessionIdFilter.java:85) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:210) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:870) at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665) at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528) at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:685) at java.lang.Thread.run(Thread.java:595)Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCertPathBuilder.java:236) at java.security.cert.CertPathBuilder.build(CertPathBuilder.java:194) at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:216) ... 43 more