Proxy Error 502 : The proxy server received an invalid response from an upstream server

Question

We are building a mass mailing sending application in Java. Mail is being send by third party SMTP. After sending 400-500 mails tomcat6 service get stopped. Below is the err

Answer 1

Add this into your httpd.conf file

Timeout 2400
ProxyTimeout 2400
ProxyBadHeader Ignore