Search Again: Re: Caching of non-resolution? From: Jerry L. Pasker Date: Wednesday, November 11, 1998 Time: 11:57:00 pm quickdns-talk@lists.menandmice.com writes: >I've experienced this a couple of times now. If our backbone goes away for >a bit and QDNS is asked to resolve a name and can't (i.e., netscape >returns >a server not found error) then all subsequent attempts to resolve that >name >fail even if the backbone comes up again. > >The only way to solve it is to select Restart from QDNS's File menu. > >So I guess my question is, Does QDNS cache failed names? If so, don't you >think it should not cache failed attempts due to the above describe >situation? > >any thoughts? > I like the fact that QDNS Pro does cache non-resolvable DNS names, at least for a short period of time. I use SIMS, and it does DNS based blacklisting, that relies on DNS names not resolving before my SMTP server accepts an email. It cuts down on the number of outgoing DNS requests, when large numbers of emails (hundreds per minute) are streaming into my server.

Messages In This Thread: Caching of non-resolution? by Sam Lewis on Nov 11, 1998 at 8:00:00 pm Re: Caching of non-resolution? by Jerry L. Pasker on Nov 11, 1998 at 11:57:00 pm