sorry, for my bad English
Hi.
I do not understand the principle with the virtual Domain.
I have e.g. two Domain. As I can say the USER1 email to SME receive from Domain1 and USER2 von Domain2.
As IMP differentiates the user whether you from Domain1 or Domain2 come.
Here the fundamental understanding is missing to me in addition. You can tell me about it somewhat.
thx

Stefan