Josh M. Hurd scribbled something like: > Hello, > > I have taken over management of a server running courier mail services. > > Today for the first time users were complaining that sending mail was > either really slow or timing out entirely. > > Not knowing much about courier I started trudging through logs and > config files. > > I found that MAXDAEMONS was set at 40 and that limit was being > reached in 1-2 seconds after courieresmtpd was restarted. > We do receive a lot of spam, I counted about 12000 connection > attempts in about 8 hours to the esmtp server. > > I increased the MAXDAEMONS to 128, which helped a bit. Then later to > 256 which seems to have helped a bit more. > I am still reaching the max connection limit and maintaining it > within 20 or so all day. > > I am not seeing a large number of errors in the log besides user > unknown (spam) > > Is setting MAXDAEMONS this high normal? It seems a little extreme to > me. > > Am I just putting a band-aid on a bigger issue? > Does anyone have any ideas of where I should look?
I'd like to note I have noticed this as well. When using our server to "send mail" from my home machine (with Entourage), Entourage sits a long long while before it finally connects and sends the mail through in a blink. While doing a "tail -f /var/log/maillog", nothing is really going on during that long span of like 15-20 seconds before my mail client connects and sends the email through... Other than five or six failed relay attempts. So I always figured my email client was just getting lost in in the ether route to the server. Because of this slow response, I have simply set all my mailboxes to use my ISP's smtp server for outgoing email as it is instant when I hit "Send Mail Now". Wish ours was that fast, and maybe what Josh wrote, is also the problem I am seeing with our courier setup? I have not experimented with raising the MAXDAEMONS , because to me, 40 SHOULD be enough. Yes, we as well see a lot of relay denied, and invalid user notices due to spammer attempts. -Randall Shaw ------------------------------------------------------- SF.Net email is sponsored by: Discover Easy Linux Migration Strategies from IBM. Find simple to follow Roadmaps, straightforward articles, informative Webcasts and more! Get everything you need to get up to speed, fast. http://ads.osdn.com/?ad_id=7477&alloc_id=16492&op=click _______________________________________________ courier-users mailing list [email protected] Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
