[Exim] sending email from another domain

Hi all

Is this scenario possible:

Exim is running on Machine A in domain afoo.com. I have a virtual domain that
I admin bfoo.com and when I send email from MAchine A I want it to go out from
user@???, but have the IP address of Machine B.

Machine B will then accept all the bounced email or invalid email addresses.
I am planning on running a corporate email notification service and I want it
to run from Machine A, but look like its runing from Machine B.

Is this possible ?




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