Al Stu" <al_...@verizon.net> wrote: >How about these two? > >> nullmx.domainmanager.com >Non-authoritative answer: >Name: mta.dewile.net >Address: 69.59.189.80 >Aliases: nullmx.domainmanager.com > >> smtp.secureserver.net >Non-authoritative answer: >Name: smtp.where.secureserver.net >Address: 208.109.80.149 >Aliases: smtp.secureserver.net > >There are two reasons it does not blow up in peoples face. 1) If it is in >the CNAME RR points to an A record in the same zone, both the A record and >the CNAME record are returned, thus meeting the A record requirement. 2) >SMTP servers are required to accept an alias and look it up. Thus there is >no need for this. > >And no it does not matter if there are multiple MX records with different >preferences values.
You say, "both the A record and the CNAME record are returned." We know that BIND does this. Is this part of the RFC? Do other DNS implementation return both the "A" and the CNAME? ---------------------------------------------------------------------- Barry S. Finkel Computing and Information Systems Division Argonne National Laboratory Phone: +1 (630) 252-7277 9700 South Cass Avenue Facsimile:+1 (630) 252-4601 Building 222, Room D209 Internet: bsfin...@anl.gov Argonne, IL 60439-4828 IBMMAIL: I1004994 _______________________________________________ bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
