| Attribute | Must | Description |
|---|---|---|
| Authorized-Domain | NT Domain name where the remote MTA is located | |
| Authorized-Password | NT Password used to gain access to the remote domain | |
| Authorized-User | NT User name used to gain access to the remote domain | |
| RAS-Callback-Number | Optional phone number for the remote MTA to call back | |
| RAS-Phone-Number | Optional overriding phone number to call | |
| RAS-Phonebook-Entry-Name | Entry name in the RAS Phonebook | |
| RAS-Remote-SRVR-Name | Remote RAS server name |