In ADSelfService Plus we want the users to be able to send confirmation code to Alternate E-mail address. But we want to administratively control what that e-mail address is instead of letting the user define it.

We would actually be ok with letting users define the alternate e-mail address if there was a way to not let them use yahoo, gmail, etc e-mail addresses.

Can ADSelfService make use of the proxyAddresses attribute from AD and grab all the SMTP: entries from it?

If not what other attributes in AD would be best suited for storing alternate e-mail address? Can that attribute be an array like attribute like otherMailbox?