On Wed, 21 Jun 2000 17:05:55 PDT, Joseph McDonald <[log in to unmask]> said: > If Listserv doesn't like the above setup, your best route would probably be > to make your A record with the name "listserv.uic.edu" (and if you still > want "machine1.uic.edu" to be in existence, make that one your CNAME). Be > sure to remove the MX record if you make "listserv.uic.edu" an A record. Um. No. You *leave* the MX in there, as follows: listserv.uic.edu. MX 0 listserv.uic.edu. This way, a remote host mailing to you will *GET* the MX record on the first DNS lookup (it is *REQUIRED* to do an MX lookup first). Any reasonable DNS server will also tack the A record for the machine into the 'additional info' field of the DNS reply. Thus, you get the A record you actually want to send to on the FIRST query. If you don't have an MX, then the remote site has to ask for the MX, get a negative answer, and THEN ask for an A record. Twice the DNS traffic. You don't want that. -- Valdis Kletnieks Operating Systems Analyst Virginia Tech