Date: Tue, 20 Feb 2001 13:30:48 +1100 From: "Corey Ralph" <corey.ralph@datafast.net.au> To: freebsd-isp@freebsd.org Subject: Dedicated smtp relay box Message-ID: <20010220133048.A91585@corey.datafast.net.au>
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Hello. I run a freebsd 4.2 qmail mail server, serving 20k or so mailboxes across 300 domains, and relaying for anywhere up to 1500 modem lines, plus microwave clients. Since installing antivirus software on our qmail server, the load has increased dramatically. It has on average 200 qmail-smtpd processes running, and available memory fluctuates from 195MB to about 50MB out of 1.7GB. I suspect that this is due to the increased time taken to process each message. I am concerned that if I open up the smtpd limit that it will run out of RAM. So, I am looking for a way to shift some of the load. My theory so far is to set up a seperate smtp server for the relaying, and redirect the traffic from the firewall or router, so that the main mail server will only handle the hosted domains, not the relaying. Removing the virus scanning for outgoing messages is not an issue, we only really want it for incoming anyway. I came across zmailer (www.zmailer.org) and they claim it is just the thing for this kind of job. Does anybody have any experience with it? They say there have been some major changes in the mime handling etc, is it solid enough? Or should I just set up another qmail box? Or is there a simple way that I am missing? Cheers, Corey To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message
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