An error has occurred with sending the test email: com.atlassian.mail.MailException: javax.mail.MessagingException: Exception reading response; nested exception is: java.net.SocketException: Connection reset

[M Shaikh]

JIRA unable to send notification emails to users.

[Nic Brough -Adaptavist- · Accepted solution]

Your mail server is not responding to the JIRA server for some reason.  Connection reset can have many causes, but it's usually incorrect credentials or a firewall blocking access.  You should be able to read further through the log for more information on the error.

[Innovación - Proyectos Compartidos]

Hi Nic Brough

I'm having the same fault, but in this case for the test instance that has the same outgoing mail configuration as the production instance. In the production instance  the outgoing mail works.

This is the trace when trying to send an email to a user within the domain :

[Nic Brough -Adaptavist-]

Then the mail server is choosing to reject it, although I'd expect a different error for that.  Connection reset still almost certainly means "your network is not connecting"

[Innovación - Proyectos Compartidos]

Hello 

 Thanks for your information , I solved de problem reconfiguring the IP of the mail server.

Milena G

[Innovación - Proyectos Compartidos]

An error has occurred with sending the test email:

com.atlassian.mail.MailException: javax.mail.MessagingException: Exception reading response;

  nested exception is:

                java.net.SocketException: Connection reset

                at com.atlassian.mail.server.impl.SMTPMailServerImpl.sendWithMessageId(SMTPMailServerImpl.java:225)

                at com.atlassian.mail.server.impl.SMTPMailServerImpl.send(SMTPMailServerImpl.java:162)

                at com.atlassian.jira.plugins.mail.webwork.SendTestMail.doExecute(SendTestMail.java:107)

                at webwork.action.ActionSupport.execute(ActionSupport.java:165)

                at com.atlassian.jira.action.JiraActionSupport.execute(JiraActionSupport.java:63)

                at webwork.interceptor.DefaultInterceptorChain.proceed(DefaultInterceptorChain.java:39)

                at webwork.interceptor.NestedInterceptorChain.proceed(NestedInterceptorChain.java:31)

                at webwork.interceptor.ChainedInterceptor.intercept(ChainedInterceptor.java:16)

                at webwork.interceptor.DefaultInterceptorChain.proceed(DefaultInterceptorChain.java:35)

                at webwork.dispatcher.GenericDispatcher.executeAction(GenericDispatcher.java:225)

                at webwork.dispatcher.GenericDispatcher.executeAction(GenericDispatcher.java:154)

                at

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

  nested exception is:

                java.net.SocketException: Connection reset

                at com.sun.mail.smtp.SMTPTransport.readServerResponse(SMTPTransport.java:2445)

                at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:2172)

                at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:726)

                at javax.mail.Service.connect(Service.java:366)

                at javax.mail.Service.connect(Service.java:246)

                at javax.mail.Service.connect(Service.java:195)

                at com.atlassian.mail.server.impl.SMTPMailServerImpl.sendWithMessageId(SMTPMailServerImpl.java:185)

                ... 270 more