Multiple accepted domain, issue with EAP

Hello,

I'm having multiple accepted domain and i have created EAP for each of one. My domain principal is : "domainA.com" and my accepted domain is "DomainB.com".

I can create user with @domainA.com address (Default email address policy). However if i wan to create the "same" user, i mean same login, for domainB.com Exchange add "1" to the email address.

Exemple, one user have email address "test@domainA.com", if i create another user with email address "test@domainB.com" Exchange modify email address with "test1@domainB.com".

I have one Default amail address policy  with EnabledEmailAddressTemplates  : {SMTP:@DomainA.com} and second email address policy EnabledEmailAddressTemplates  : {SMTP:@toto.com} with recipient filter "RecipientFilter                  : UserPrincipalName -like '*domainB.com'"

How can i deal with this issue ?

Thanks.

MCITP : Enterprise Messaging Administrator 2010
Engineer Hosted Exchange solutions