address_verification probes -- are they supposed to work for aliases & +plus addresses?

[jasonsu]

Do address_verification probes work when checking aliased or plus-addressed 
addresses?

E.g.,

I have a REAL address defined,

  m...@example.com

address_verification probes work, and the mail's passed.

Atm, however, mail to both

  me.al...@example.com (aliased to m...@example.com)

and

  me+p...@example.com

both are rejected with address verification probes, returning

  Recipient address rejected: undeliverable address: Recipient address 
verification failed;

Those are certainly usable addresses.

Are address_verification probes *supposed* to work for them?

Jason