Can someone help me to resolve this exchange. I just explain out exchange architecture may it will help you all to troubleshoot. We have installed First exchange server in US & run the forest preparation everything is setup & running fine but we install exchange to India as well. I moved couple of mailboxes from US exchange information store to india exchange server. Out of 40 few of the users are complaining that they are unable to send emails to group. when the trying to send emails to group its showing undelivered message " #5.5.0 smtp;500 Non RFC-compliant response received" But they are able to send email to individual email ID. we have seperate SMTP virtual server thorough which all emails are going on .
Please let me know if u want more details to solve this issue or this information is enough to troubleshoot.