Re: Sugesstions building a rather big mail system.
On Mon, 2003-10-06 at 16:03, Fredrik wrote: > Hello fellow sysadmins, > > I have been aproached about building a rather big mail system handling > 500. existing accounts (running today on a windows based product (ick)) > with a growth about 50.000 new accounts per year. > The services needed is: smtp, pop3, imap4. > > I have used LVS for about 3y with good results for 30.000 acounts. > But this is certainly a bigger project. Should I go for alteon or any other > closed product or stick with LVS? > > Is there anyone on the list running such a system or have some comments about > building such a system? (I do prefer to use OS/FS Software) > > My main concern is the storage. SAN? > Anyone used supersparrow for source based load balancing? > > What do you think? Check out http://asg.web.cmu.edu/twiki/bin/view/Cyrus/CarnegieMellonCyrusInstallation Not quite as large as your setup though. > Thanks for you time. > > -- > .''`. Fredrik, [EMAIL PROTECTED] > : :' : 2CD6 C838 BE77 795F 5EF1 3E5B DA91 EE7B A58E 164 > `. `' > `-- Hope this helps, -- Guus Houtzager Email: [EMAIL PROTECTED] PGP fingerprint = 5E E6 96 35 F0 64 34 14 CC 03 2B 36 71 FB 4B 5D "A)bort, R)etry, I)nfluence with large hammer." -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Re: Dovecot
On Thu, 2003-09-11 at 19:30, Fraser Campbell wrote: > On Wednesday 10 September 2003 19:32, Mark Devin wrote: > > Check the "Postfix+Courier-IMAP+MySQL for multiple domains HOWTO" at > http://kirb.insanegenius.net/postfix.html ... everything you need to > accomplish such a system is packaged up in Debian stable. I've been using > systems such as this for 6 months and haven't had any glitches yet, the > systems are not high volume but they're steadily used. With user accounts > stored in a database whipping up an administrative interface for domains is > quite trivial, I just don't see the advantages of going the extra step of > putting the emails themselves into a database. Well, using a database backend for the storage of the mails themselves gives you the possibility of implementing clustering and so create a redundant mailstore, possibly distributed over several locations. > -- > Fraser Campbell <[EMAIL PROTECTED]> http://www.wehave.net/ > Halton Hills, Ontario, Canada Debian GNU/Linux Regards, -- Guus Houtzager Email: [EMAIL PROTECTED] PGP fingerprint = 5E E6 96 35 F0 64 34 14 CC 03 2B 36 71 FB 4B 5D "A)bort, R)etry, I)nfluence with large hammer." -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Re: Dovecot
Hi, On Wed, 2003-09-10 at 01:31, Jernej Horvat wrote: > Tuesday 09 of September 2003 08:55, Adrian von Bidder > > > > (And - sorry, can't help you with an imap server with the mails in a > > relational db, I don't know of any solution that does this.) > > I know one. MS Exchange. :] > > And you know how well that works in case the db goes bananas. A while back I came across another one, dbmail. Check www.dbmail.org I wanted to give it a go, but unfortunately haven't had time to play with it yet. Does anybody on this list have experience with dbmail? Regards, -- Guus Houtzager Email: [EMAIL PROTECTED] PGP fingerprint = 5E E6 96 35 F0 64 34 14 CC 03 2B 36 71 FB 4B 5D "A)bort, R)etry, I)nfluence with large hammer." -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Re: SMP on Debian server with Hyperthreading
Hi, On Sat, 2003-09-06 at 09:31, Jason Lim wrote: > Hi Guus, > > Yes, BIOS setting is enabled. The ONLY thing that I haven't done is edit > lilo to include the acpismp=force setting. Did you set that to make it > work? Does it work without it (ie. SMP enabled WITHOUT modifying lilo)? Haven't modified lilo for this to work. I looked again at your dmesg output and compared it to mine. With me it's ACPI doing the detection of the cpu's. Did you enable ACPI? Part of my dmesg: Linux version 2.4.22 ([EMAIL PROTECTED]) (gcc version 3.3.2 20030831 (Debian prerelease)) #1 SMP Tue Sep 2 11:37:18 CEST 2003 BIOS-provided physical RAM map: BIOS-e820: - 000a (usable) BIOS-e820: 000f - 0010 (reserved) BIOS-e820: 0010 - 2fff (usable) BIOS-e820: 2fff - 2fff3000 (ACPI NVS) BIOS-e820: 2fff3000 - 3000 (ACPI data) BIOS-e820: fec0 - 0001 (reserved) 767MB LOWMEM available. ACPI: have wakeup address 0xc0002000 found SMP MP-table at 000f51c0 hm, page 000f5000 reserved twice. hm, page 000f6000 reserved twice. hm, page 000f reserved twice. hm, page 000f1000 reserved twice. On node 0 totalpages: 196592 zone(0): 4096 pages. zone(1): 192496 pages. zone(2): 0 pages. ACPI: RSDP (v000 IntelR) @ 0x000f6c50 ACPI: RSDT (v001 IntelR AWRDACPI 0x42302e31 AWRD 0x) @ 0x2fff3000 ACPI: FADT (v001 IntelR AWRDACPI 0x42302e31 AWRD 0x) @ 0x2fff3040 ACPI: MADT (v001 IntelR AWRDACPI 0x42302e31 AWRD 0x) @ 0x2fff6700 ACPI: DSDT (v001 INTELR AWRDACPI 0x1000 MSFT 0x010d) @ 0x ACPI: Local APIC address 0xfee0 ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled) Processor #0 Pentium 4(tm) XEON(tm) APIC version 16 ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] enabled) Processor #1 Pentium 4(tm) XEON(tm) APIC version 16 ACPI: LAPIC_NMI (acpi_id[0x00] polarity[0x1] trigger[0x1] lint[0x1]) ACPI: LAPIC_NMI (acpi_id[0x00] polarity[0x1] trigger[0x1] lint[0x1]) ACPI: IOAPIC (id[0x02] address[0xfec0] global_irq_base[0x0]) IOAPIC[0]: Assigned apic_id 2 IOAPIC[0]: apic_id 2, version 32, address 0xfec0, IRQ 0-23 ACPI: INT_SRC_OVR (bus[0] irq[0x0] global_irq[0x2] polarity[0x0] trigger[0x0]) ACPI: INT_SRC_OVR (bus[0] irq[0x9] global_irq[0x9] polarity[0x1] trigger[0x3]) Using ACPI (MADT) for SMP configuration information Kernel command line: auto BOOT_IMAGE=Linux ro root=303 hdc=scsi and so on... ACPI part of my config: # # ACPI Support # CONFIG_ACPI=y # CONFIG_ACPI_HT_ONLY is not set CONFIG_ACPI_BOOT=y CONFIG_ACPI_BUS=y CONFIG_ACPI_INTERPRETER=y CONFIG_ACPI_EC=y CONFIG_ACPI_POWER=y CONFIG_ACPI_PCI=y CONFIG_ACPI_SLEEP=y CONFIG_ACPI_SYSTEM=y # CONFIG_ACPI_AC is not set # CONFIG_ACPI_BATTERY is not set CONFIG_ACPI_BUTTON=y CONFIG_ACPI_FAN=y CONFIG_ACPI_PROCESSOR=y # CONFIG_ACPI_THERMAL is not set # CONFIG_ACPI_ASUS is not set # CONFIG_ACPI_TOSHIBA is not set # CONFIG_ACPI_DEBUG is not set # CONFIG_ACPI_RELAXED_AML is not set > Thanks. I hope this helps. -- Guus Houtzager Email: [EMAIL PROTECTED] PGP fingerprint = 5E E6 96 35 F0 64 34 14 CC 03 2B 36 71 FB 4B 5D "A)bort, R)etry, I)nfluence with large hammer." -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Re: SMP on Debian server with Hyperthreading
Hi, On Fri, 2003-09-05 at 17:06, Jason Lim wrote: > Hi all, > > Just wondering... I've got a 2.4Ghz Hyperthreading (100% it is the > hyperthreading model), and the BIOS sees it. I have a 3.06 GHz P4 on an I845G chipset and in the BIOS I had to switch the HT option from disabled to enabled. So is it actually on in your BIOS-settings? > I then compiled the kernel... the usual, except added the SMP support > setting "Symmetric multi-processing support". Nothing else was changed. > > Compiled it, liloed it... it's running it: > > # uname -a > Linux megalith 2.4.22 #8 SMP Thu Aug 28 14:44:13 HKT 2003 i686 unknown > > However, That's correct. > # mpstat -P > Not an SMP machine... > > And in top i don't see the multiple CPU usage This does work on my setup. I'm running 2.4.22 now, but it worked with 2.4.20 aswell. > this is all strange. For Linux, aren't Hyperthreading CPUs suppose to act > like completely separate independent CPUs (this was suppose to change in > 2.6... but for 2.4, they can't tell the difference, right?). > > Hope you can advise... as hyperthreading is there but not being used, > which is a waste and could add performance. My machine is a workstation, so I don't know what would happen with typical server software (ie apache, database) but for instance compiling a kernel with 3 simultaneous threads is about 20% faster than using only 1 thread. > Thanks in advance! Hope this helps! > Jas Regards, -- Guus Houtzager Email: [EMAIL PROTECTED] PGP fingerprint = 5E E6 96 35 F0 64 34 14 CC 03 2B 36 71 FB 4B 5D "A)bort, R)etry, I)nfluence with large hammer." -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Re: Sendmail or Qmail ? ..
On Fri, 2003-09-05 at 16:18, Tinus Nijmeijers wrote: > On Fri, 2003-09-05 at 16:08, Eric Sproul wrote: > > > Yes, I know we could set a larger minimum interval for POP, but the > > political implications of generating tech support calls about "why can't > > I POP my mail?" prevent it. Don't get me started on THAT. 8^o > > sorry to butt in, but HOW could you set such a minimum interval? > I have searched and found nothing that could do this for me. It's not a configoption of your MTA, it's a pop/imap server specific setting. We're running cyrus and there it's controlled using # Minimum time between POP mail fetches in minutes popminpoll: 1 in /etc/imapd.conf > thanks > > tinus. Regards, Guus Houtzager -- Luna.nl B.V. --- Puntegaalstraat 109 Postbus 63000 Tel : (010) 750 2000 3024 EB ROTTERDAM 3002 JA ROTTERDAMFax : (010) 750 2002 www.luna.nl [EMAIL PROTECTED] Helpdesk: (010) 750 2020 -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
