Hello Guys
I have a mailflow issue, hoping someone can help with detail description, below is the setup
Exchange server 2010 SP3 with all roles in one server
Exchange server 2013 SP1 with CU6 with all roles in one server - this server is in a different subnet to the 2010 server. I am able to see exchange 2010 databases and mailboxes from Exchange 2013. For testing purposes, I have moved 3 mailbox from 2010 to 2013. These 3 mailbox, is able to send and receive email from Internet but to each other via OWA or Outlook. These 3 mailbox also not able to send to receive email from any mailbox that is still in 2010 server via OWA or Outlook. I am not planning the whole server cutover in a go and planning to do state by stage mailbox migration so I need mailflow working properly. When I send an email from one of the migrated mailbox that is in 2013 server, I can see that the email leaves the mailbox outbox and sits in the queue ..
Can someone please provide detailed solution what needs to be configured?
MCITP, MCSA, MCSE,VCP - Consultant, Solution Design, Implementation