I believe the smtpd processes in freebsd are much smaller than linux. = Other than that I havent really heard of any benefit of one over the = other. We use freebsd because we prefer IPF/PF over ipchains (we havent = been able to find a good Stateful packetfilter for linux :( )
-----Original Message----- From: Ed Butler (49pence) [mailto:[EMAIL PROTECTED] Sent: Sunday, March 28, 2004 5:55 PM To: [EMAIL PROTECTED] Subject: [IMGate] Imail/IMGate newbie question Decided to summarise my quite verbose email after writing it: 1) What kind of load can Imail cope with, using two postfix helpers 2) What's the accepted/preferred way of exporting domains from Imail to IMGate on a regularly changing config 3) Preferred AV solution We've just recently switched from Merak (www.icewarp.com - tons of = features, poor stability) to Imail. Imail seems fine for the few days we've run it = so far, but it's only on a temporary machine at the moment - taking 30-40% = load on a 2.8ghz/1gb box. We're putting it on a decent spec box soon to = replace this.=20 I've got the IMGate postfix config files from Len Conrad, and = investigating putting two Linux (is there any good argument to use FreeBSD over = Debian) servers as Imail helpers. The plan is to have one doing virus/spam filtering, and then delivering mail to Imail, the second server would be = to process all outgoing email. Either could do both jobs in case of = failure. We're expecting this set up to be able to cope with 10,000 domains and 25,000 users, sending up to 50,000 emails daily and receiving 150,000 = daily. Is this an unrealistic target? Hope I'm not asking 'how long is a piece = of string' My current conundrum is how to populate the transport and relay_domains files. Although IMGate seems to be specifically written for Imail (I understand it's now being used with other products though) there doesn't seem to be an export/import tool for this. Whilst I'm happy to get dirty writing a tool to export the domains/users from the Imail config store (registry in our case) there's no point reinventing the wheel. :) The = major consideration with this, is that in our case it really needs to be run = every hour. I've seen the Imailusers utility, which obviously exports the = domains, but doesn't go the whole hog and get them into a postfix friendly = format, from what I can understand. I'm guessing there is a prefferred/standard = way of doing this that 99% of Imail users are using - I wouldn't mind = knowing what it is. :) Final question has to do with AV filtering, and also spam to point. = There are a couple of suitable AV products, my current preferred one through looking at available information is AVG. Also with spam - what filters = etc are recommended? What kind of mileage do you get from them? Apologies for all the questions, realise they're very basic but you have = to start somewhere. :) Thanks, Ed Butler
