we configure new mail domain to our Exchange 2013
we add another mail domain to our organization, to make users to send receive mails from two mail domains
first default : @myorg.com
new: @neworg.com
1- we add neworg.com as accepted domain
2- we configure the mail address policy to users @neworg.com
3 - we configure UPN suffix for new org
4- we configure MX record in ISP side to be
mail.myorg.com refers to pubilc IP like 90.60.140.120
and same for new one
mail.neworg.com refer to same Public IP 90.60.140.120
now
we can send and receive mails internally
and send external mails
but can not receive from external mails
can anyone help on that please