we have exchange server 2007 and we are migrating it to exchange server 2013.
We have installed the exchange server 2013 with CU8 and after the installation I have created send connector in exch 2013 with SMTP *.
I have test the mail flow from both server as below,
exch2007 mailbox : test1
exch2013 mailbox: test2
test1 mailbox can able to send and receive emails from external network.
test2 mailbox can able to send and receive emails from external network.
test1 mailbox can able to send mail to test2 mailbox
but test2 can not able to send mail to test1 mailbox.
when I tried to send email from test 2 mailbox to test1 than that email shows in sent item of test2 mailbox but i could't deliver to test1 mailbox. Even I am not getting any delivery failure notice.
Kindly suggest here because of this we have stop the mailbox migration to exchange server 2013.