Our client's domain is domain.bc.ca. This email as sender/return address doesn't work on Payables 8.1F 140409 and I can imagine it might not work in other modules either.
This is the first time that I see this issue and it has been fixed by redirecting the email using another address. However, I think, Adagio should work with email addresses that have more than one segment.
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Patricia Balbuena Cotlear
AP SMART SUPPORT
236 991 3060