Hi, Michael Thomas - Mathbox schrieb: >> Jeroen van Aart wrote: >>> Kevin wrote: >>>> Or it could be an external service causing the delay. >>> I don't think an external service would cause the cpu usage >> to increase >>> a lot (at least it shouldn't), just a waiting time/time out. >> I don't think it should either, but it IS a possibility. >> >> Kevin > > Kevin, > > It is an absolute possiblity. If you are using unmodified Windows DNS, > NET:DNS will tie up CPU resources waiting for Windows DNS to time out on > non-existent/very slow name servers during MX/A/PTR checks. On the otherhand > RBLs normally respond in a resonable fashion, so RBL checks are rarely an > issue. >
I think I can rule out a dns issue for this particular problem. I'm using linux, net::dns 0.59 and the problem can be triggered by one single big mail. There is no dns timout involved, the connection is open for around 3000 seconds from a whitelisted server/ip so there is no RBL check. It looks really like the behaviour if ccMaxBytes is not set. But it's there in my config: ccMaxBytes:=1 Rainer ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Assp-user mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/assp-user
