I have to migrate Exchange 2007 with 5 mailbox databases and 900 mailboxes and an Edge server 2007 to 2013 version.
I think that the best way to do it is, first of all, install a new Edge server 2013 and replace 2007 by 2013. I have installed it already, and my first surprise is that on edge server 2013 is not present the exchange administration console and if you want to create a new connector you must to do it from mailbox server Exchange Admin Center after "import edge subscription", but.. whats about if you have not a exchange 2013 already? Will it work from Exchange administration console 2007?
Must I to recreate inbound/outbound connectors or Edge 2013 will sync the actually connectors I have??? I mean, if I set up a new edge server 2013 and I redirect port 25 to it, all connectivity between servers are ok and I do the import the edge subscription to the old Exchange server 2007, must to work properly or I have to take more considerations?