Am 2009-07-19 04:14:33, schrieb Thomas Goirand: > Christoph Haas wrote: > > If the MySQL service becomes unavailable for Postfix then the sending > > server will get a 4xx temporary error. In a huge setup I'd probably set > > up monitoring to get noticed of such outages quickly. And I'd use a load > > balancer in front of two MySQL instances (master-slave replication). > > MySQL replication only works with low loads. In fact, running MySQL over > the network has a HUGE performance penalty. This is, WHY I use PostgreSQL... It performance miuch better. Currently I am running a Test-Installation with Courier-Imap-Proxy, two Courier-Imap-Storage-Server and two PostgreSQL Database and a Webserver. I am using 6 "Sun Fire X4100M2" with smallest Quad-Core Opteron and 2x2 GByte of memory. I have 180 Regular-Users on the System and for testing arround 400 foreigners. It handel currently my 4 own and 3 customer domains. The next step is to install one or two inbound MTA's which do user customised virus/spam filtering using courierlocalfilter. Unfortunately I have not seen a postfix/exim setup which is able to do this with seperated Inbound-MTA, IMAP-Proxy and IMAP-Storage. This is, what bigger ISP are using but it seems, each one has to hack its own stuff (Freenet, 1&1/GMX, Arcor, T-Online, KabelBW, ...) > I filter things like /^dsl.*\..*/, /ppp.*\..*/ and things like that, > known attachments like file.zip, details.zip and such, known X-Mailer > like SmartMailer, Avalanche, etc, subject with medecine names Here you would produce per day more then 2000 False-Positives in my network. Spamfiltering MUST be individuual and if you give th user options, like at <freenet.de>, the user can CHOOSE which he/she want. Global filtering is VERY dangerous. And of course, you can not use /^dsl.*\..*/, /ppp.*\..*/ if you have hosted Domains from your customers, because most customers ARE on such lines. > Courier-maildrop sends a (configurable) message in the INBOX whenever > the mailbox reaches 90%, so it's fine. Q: I am using the courier-suite too, but are you able to use Per-User-Quota? > > Can you compare that to mailman? I haven't used MLMMJ yet. > > Oh yes! MLMMJ is lightyears ahead of mailman, that is to me, something > of the past. MLMMJ is really GREAT, and the dev team doing it very > friendly as well. This is NO explanation... What is better? I use mailman and courier-mlm and both are working perfectly as I expect > On our system, we do monitor FTP, POP, IMAP, SMTP and web traffic in > real time, so we can disable some accounts if they abuse. Which tools do you use? > Well, I perfectly know how to script things, our panel does all of the > setup by itself, and there's nothing to be done by hand by the users. > It's just that it's not really Debian policy compliant, and it cannot be > sent in a postinst. Hmmm, there AFAIK several packages in Debian which modify the behabviour of other packages in Debian, but there is a "debconf" question, which ASK the administrator, whether the package should take over the configuration which the administrator should answer [Ny]. Thanks, Greetings and nice Day/Evening Michelle Konzack Systemadministrator Tamay Dogan Network Debian GNU/Linux Consultant -- Linux-User #280138 with the Linux Counter, http://counter.li.org/ ##################### Debian GNU/Linux Consultant ##################### Michelle Konzack c/o Shared Office KabelBW ICQ #328449886 +49/177/9351947 Blumenstasse 2 MSN LinuxMichi +33/6/61925193 77694 Kehl/Germany IRC #Debian (irc.icq.com)
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