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- From: dan@innosoft.com (Daniel C. Newman)
- Newsgroups: vmsnet.mail.pmdf
- Subject: RE: Very large alias and reverse databases?
- Message-ID: <01GR0VGDD91Y9AMGEZ@INNOSOFT.COM>
- Date: 11 Nov 92 18:35:50 GMT
- Organization: The Internet
- Lines: 25
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- Resent-Date: 11 Nov 1992 11:35:50 -0700 (PDT)
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-
- > Will PMDF handle an alias and reversal database starting
- > at about 5,000 entries and possibly growing to 20,000?
-
- I know of at least one site with alias and reversal databases with over 115,000
- entries. They say it works just fine. PMDF uses a keyed, indexed file so
- lookups are pretty fast.
-
- > What we are trying to do is allow everyone at the Medical Center
- > to have a single id in the form of id@mc.duke.edu
- > As most users are not on the PMDF node (not even a VMS system),
- > I want to rewrite the outgoing address into the normalized form using
- > the reverse databse and then use the alias to direct it to
- > the appropriate channel. For example,
- >
- > Outgoing: user%node@mc.duke.edu becomes id@mc.duke.edu
- > Incoming: id@mc.duke.edu user%node@channel
-
- This should work just fine. Unfortunately, you cannot couple REVERSE mappings
- with the reversal database. (If this were possible, and your usernames "user"
- were unique across all nodes "node", then you could simplify things by first
- using a REVERSE mapping to map user%node@mc.duke.edu to user@mc.duke.edu. This
- would then cut down on the number of entries per user in the reversal
- database.)
-
- Dan
-