Definitions for "DUL"
Keywords:  rbl, dialup, companion, dial, bypass
Dialup User List contains a database of dial-up address blocks and is able to identify routes which bypass the mail service of the originating ISP.
Dial-up User List, which has entries for ranges of IP addresses used by Internet Service Providers for modem users.
Companion database to the RBL. The DUL is a list of known dial-up IP addresses. These sites are not necessarily spam sites, but the list is provided so that you may choose not to accept email directly from them. Email transmitted directly from a dial-up system -- as opposed through the dial-up system's own provider -- is very likely to be spam.
Keywords:  deputy, librarian, university
Deputy University Librarian