-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 07/03/2013 11:33 PM, Doug Barton wrote: > On 07/03/2013 07:52 PM, Novosielski, Ryan wrote: | On 07/03/2013 > 04:39 AM, Matus UHLAR - fantomas wrote: |> On 02.07.13 08:53, > Daniel McDonald wrote: |>> I've had trouble with OSI-Soft PI > historian without reverse |>> entries. If there is no reverse, > then the PI software would |>> spend about 30 seconds looking in > vain for a DNS answer before |>> sending a SYN-ACK packet. | |> If > there is no reverse, the software should get NXDOMAIN answer. in |> > such case there's nothing to wait for any longer. Are you sure > that |> was not a case of unreachable servers? | | Something I just > stumbled over today (funny that it was during this | topic) is that > there is a Cisco ASA issue that makes reverse queries | against > anything but in-addr.arpa fail with a timeout. Unfortunately, | > some things check IN-ADDR.ARPA (why on earth?) and the lack of > that | entry is apparently causing mail delivery problems. > > It's not clear what distinction you're making. DNS should not be > case sensitive, or is that what you're saying the problem is?
Sorry I wasn't that clear -- the issue that we're having is that the reverse DNS is not available. The reason happens to be case sensitivity and problem with the Cisco firewall we're using -- not a choice not to include those entries -- but in any case, it is an example of what can happen when your reverse entries are not properly configured. - -- ____*Note: UMDNJ is now Rutgers-Biomedical and Health Sciences* || \\UTGERS |---------------------*O*--------------------- ||_// Biomedical | Ryan Novosielski - Sr. Systems Programmer || \\ and Health | novos...@rutgers.edu - 973/972.0922 (2x0922) || \\ Sciences | OIT/EI-Academic Svcs. - ADMC 450, Newark `' -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) Comment: Using GnuPG with undefined - http://www.enigmail.net/ iEYEARECAAYFAlHU/5AACgkQmb+gadEcsb46cwCcD8sE/fwK5DHkkcr9u3uAxzKp qigAoJuE7fYTDLGfkRjM6k9op1SSg5lP =xykF -----END PGP SIGNATURE----- _______________________________________________ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users