I am currently migrating 4 servers (4 administration groups) from exchange 2003 to 2010.
I have successfully migrated the first 2003 server (ukmail) to 2010 (ukex). I am now migrating the second 2003 server (nymail) to 2010 (nyex) and have mail flow issues.
Whenever I send an email from nymail (2003) to nyex (2010), it goes via ukex (2010) server. I have configured a legacy routing group direct from nymail to nyex.
Does anyone have an idea why this could be happening?
Thanks in advance