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Proxy error while deploying Spring boot app on Jelastic

I am trying to deploy simple Spring Boot app on Jelastic. So I have created environment with Java 8, Postgres 9.5, Apache 2.4, deployed war-file and nothing works.
I receive the following error:
Proxy Error
The proxy server received an invalid response from an
upstream server. The proxy server could not handle the request GET
/localize/. Reason: Error reading from remote server
Apache/2.4.6 (CentOS) Server at node30... Port 80
It might be for the following reason: my server configurated on port 5555. However, I don't see any options that would tell Jelastic about the neccesary port.

Tried all: '1' addresses, but could not connect over HTTP

Can some one help me understand why I'm getting this error while running my managed server locally. My admin server is also running (locally as well) on port 7001.
Why it is trying to connect 172.30.XXX.XXX ip ? I am but confused what's happening here. When I startup my managed server I get this exception.
INFO: The Wsee Service is starting
java.net.ConnectException: Tried all: '1' addresses, but could not connect over HTTP to server: '172.30.XXX.XXX', port: '7001'
at weblogic.net.http.HttpClient.openServer(HttpClient.java:401)
at weblogic.net.http.HttpClient.openServer(HttpClient.java:506)
at weblogic.net.http.HttpClient.New(HttpClient.java:313)
at weblogic.net.http.HttpClient.New(HttpClient.java:289)
at weblogic.net.http.HttpURLConnection.connect(HttpURLConnection.java:267)
at weblogic.deploy.service.datatransferhandlers.HttpDataTransferHandler.getDataAsStream(HttpDataTransferHandler.java:76)
Thanks for your help.

Amazon SES Connection

I am trying to use Amazon SES mail service. I have configured settings properly, and with the credentials it is working in one of our network machine, but in other it is not working, alwayz gives ConnectException
javax.mail.MessagingException: Could not connect to SMTP host: email-smtp.us-east-1.amazonaws.com, port: 25;nested exception is:java.net.ConnectException: Connection refused: connect

Check your security groups and make sure SMTP port is open to this network or device.

Timeout while deploying Java Application to remote glassfish server from Netbeans

while deploying to a remote Glassfish 4.1 Server from Netbeans 8.0.1, i get a Timeout.
I configured the Glassfish Server by adding a new Server Instance and that seemed to work. I can see the applications running on the server and i am able to undeploy a application (directly from netbeans).
But when i try to deploy my application to the remote Server, i get a timeout Exception.
(i used enable-secure-admin to gain remote access from netbeans to the server)
What confuses me is, that when i enabled secure admin, i expected to see a https:// url in netbeans. But this url starts with http:// and i cant find an option to change this.
Server Attributes:
Host: [remote-ip]
DAS Port: 4848
Domain: domain1 (same as on the remote server)
Target: empty
Username PW : as set on the remote server
"Enable JDBC Driver Deployment" and "Preserve Sessions Across Redeployment" are checked

Could you please attach the logs.
most probably its issue with the grizzly jar.
Please try the patched grizzly jar and see if it works for you.
Checkout : https://java.net/jira/browse/GRIZZLY-1713 for the same

GWT send mail in development mode mail server problem

I am trying to send a mail with gwt and java on the server with the buitin jetty on eclipse but I am getting the following error:
Cannot open and load mail server properties file.
Cannot send email. javax.mail.MessagingException: Could not connect to SMTP host: localhost, port: 25;
nested exception is:
java.net.ConnectException: Connection refused: connect
does someone know what to configure to make it work??

This is not GWT related problem. Test you email sending code in isolation (without GWT and Jetty).
Start with sample code and configure it's parameters to your need. You will also need to use a SMTP server to send emails this way.