I am running ADmanager and office 365, what I need to do as part of a user creation template is populate the LDAP attribute "proxyAddresses" based on the users username.

I have added the custom attribute fine, but I don't know how to add a variable to the prefix of the email address.

for example:

I have a username called "test"

and I need to populate proxy addresses with:

"SMTP: test@domain1.com;smtp: test@domain2.com"