I remember I asked several months ago if it would be possible to have an optional switch that would report unexpected long response times from IP-blacklists into a (separate) logfile.
On high volume server even if Declude is able to run all IP-queries in parallel maybe it would be usefull to know if a configured blacklist has long response times or even timeouts. Markus -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Chase Seibert Sent: Tuesday, October 05, 2004 4:37 PM To: [EMAIL PROTECTED] Subject: [IMail Forum] DNS Blacklist Speed We are seeing a slight 30-60 second delay on incomming email, which I've tracked down to the DNS blacklist lookups. I have a couple of questions regarding how to fix this, if possible. Granted, I do have 14 rules, which I suppose I could cut back on. 1. Why aren't these queries done in parallel? Could they be? I suspect this would speed them up by a factor of 10. 2. Is 14 rules too many, or do I just have to live with a 30 delay at this number? 3. Would caching speed this up? I have the iMail DNS cache set to 200. Does this get used for blacklists? Should I up it? 4. Has anyone implimented some kind of caching on their local DNS server that would speed this up? We run MS DNS, not sure what the caching is like. I know a 30-60 second delay is not that bad; email is not IM after all. However, prior to having spam filtering, it was virtually instantaneous (1-2 seconds). The clients are givin us a hard time about it, even though they love the spam filtering. Thanks! -Chase Chase Seibert | Network and Systems Engineer | Bullhorn Inc. | 617.464.2440 x119 | www.bullhorn.com --- [This E-mail was scanned for viruses by Declude Virus (http://www.declude.com)] --- This E-mail came from the Declude.JunkMail mailing list. To unsubscribe, just send an E-mail to [EMAIL PROTECTED], and type "unsubscribe Declude.JunkMail". The archives can be found at http://www.mail-archive.com.
