15:51:47,736 ERROR [org.keycloak.forms.login.freemarker.FreeMarkerLoginFormsProvider] (default task-4) Failed to send verification email: org.keycloak.email.EmailException: Failed to template email

at org.keycloak.email.freemarker.FreeMarkerEmailTemplateProvider.send(FreeMarkerEmailTemplateProvider.java:179)

at org.keycloak.email.freemarker.FreeMarkerEmailTemplateProvider.send(FreeMarkerEmailTemplateProvider.java:150)

at org.keycloak.email.freemarker.FreeMarkerEmailTemplateProvider.sendVerifyEmail(FreeMarkerEmailTemplateProvider.java:146)

at org.keycloak.forms.login.freemarker.FreeMarkerLoginFormsProvider.createResponse(FreeMarkerLoginFormsProvider.java:156)

at org.keycloak.authentication.requiredactions.VerifyEmail.requiredActionChallenge(VerifyEmail.java:73)

at org.keycloak.services.managers.AuthenticationManager.executionActions(AuthenticationManager.java:573)

at org.keycloak.services.managers.AuthenticationManager.actionRequired(AuthenticationManager.java:504)

at org.keycloak.services.managers.AuthenticationManager.nextActionAfterAuthentication(AuthenticationManager.java:426)

at org.keycloak.services.resources.LoginActionsService$Checks.verifyRequiredAction(LoginActionsService.java:302)

at org.keycloak.services.resources.LoginActionsService.processRequireAction(LoginActionsService.java:856)

at org.keycloak.services.resources.LoginActionsService.requiredActionGET(LoginActionsService.java:849)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:497)

at org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:139)

at org.jboss.resteasy.core.ResourceMethodInvoker.invokeOnTarget(ResourceMethodInvoker.java:295)

at org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:249)

at org.jboss.resteasy.core.ResourceLocatorInvoker.invokeOnTargetObject(ResourceLocatorInvoker.java:138)

at org.jboss.resteasy.core.ResourceLocatorInvoker.invoke(ResourceLocatorInvoker.java:101)

at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:395)

at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:202)

at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:221)

at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:56)

at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:51)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)

at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85)

at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:129)

at org.keycloak.services.filters.KeycloakSessionServletFilter.doFilter(KeycloakSessionServletFilter.java:88)

at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:60)

at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)

at io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:84)

at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)

at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)

at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)

at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131)

at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57)

at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)

at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64)

at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60)

at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77)

at io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50)

at io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43)

at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)

at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)

at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:284)

at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:263)

at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:81)

at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:174)

at io.undertow.server.Connectors.executeRootHandler(Connectors.java:202)

at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:793)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

at java.lang.Thread.run(Thread.java:745)

Caused by: org.keycloak.email.EmailException: javax.mail.MessagingException: Exception reading response;

  nested exception is:

java.net.SocketTimeoutException: Read timed out

at org.keycloak.email.DefaultEmailSenderProvider.send(DefaultEmailSenderProvider.java:128)

at org.keycloak.email.freemarker.FreeMarkerEmailTemplateProvider.send(FreeMarkerEmailTemplateProvider.java:185)

at org.keycloak.email.freemarker.FreeMarkerEmailTemplateProvider.send(FreeMarkerEmailTemplateProvider.java:177)

... 57 more

Caused by: javax.mail.MessagingException: Exception reading response;

  nested exception is:

java.net.SocketTimeoutException: Read timed out

at com.sun.mail.smtp.SMTPTransport.readServerResponse(SMTPTransport.java:2351)

at com.sun.mail.smtp.SMTPTransport.issueSendCommand(SMTPTransport.java:2228)

at com.sun.mail.smtp.SMTPTransport.finishData(SMTPTransport.java:2027)

at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:1242)

at org.keycloak.email.DefaultEmailSenderProvider.send(DefaultEmailSenderProvider.java:125)

... 59 more

Caused by: java.net.SocketTimeoutException: Read timed out

at java.net.SocketInputStream.socketRead0(Native Method)

at java.net.SocketInputStream.socketRead(SocketInputStream.java:116)

at java.net.SocketInputStream.read(SocketInputStream.java:170)

at java.net.SocketInputStream.read(SocketInputStream.java:141)

at com.sun.mail.util.TraceInputStream.read(TraceInputStream.java:124)

at java.io.BufferedInputStream.fill(BufferedInputStream.java:246)

at java.io.BufferedInputStream.read(BufferedInputStream.java:265)

at com.sun.mail.util.LineInputStream.readLine(LineInputStream.java:92)

at com.sun.mail.smtp.SMTPTransport.readServerResponse(SMTPTransport.java:2331)

... 63 more