On Thu, 01 Nov 2012 10:22:13 +0100 Robert Schetterer <r...@sys4.de> wrote:
> Am 01.11.2012 09:14, schrieb Ram: > > > > On 11/01/2012 11:49 AM, mancyb...@gmail.com wrote: > >> Hi All, first post here, nice to meet you :) > >> > >> I've been using postfix and dovecot for years but always with few users. > >> > >> Now i must build a server for 1500 users, > >> they will use various email software (thunderbird, outlook, ..) > >> the webmail (i'm not sure if squirrelmail or roundcube) > >> and blackberry devices (with the BIS service). > >> > >> There will be around 1000 domains (virtual_domains) and postfix will > >> read its users and domains from mysql. > >> > >> I already have the hardware, it is a server with 4 physical cpu (Intel > >> Xeon E5504 @ 2.00GHz) and 24 gb of ram, > >> do you think it is enough ? > >> > > Usually postfix would not be the bottleneck for any mail server. You > > need to size for dovecot in your case. > > And sizing would be impossible unless you know how many mails / hr or > > concurrent imap / pop connections you are going to get. > > Please size your dovecot server accordingly. The disk i/o will also be > > very important when you size dovecot. > > > > Thank > > Ram > > PS: 1500 users with 1000 domains means hardly 2 users per domain .. > > Are these right numbers ? > > > > Hi, what you need is some idea of tec about backup, failure safety, > loadbalancing , cluster storage etc specially on the imap/pop side, > postfix side mostly is the more easy part in such setups > and not known for needing heavy hardware or producing bottlenecks > in short words, you have to think about the whole setup you wanna goal > first, > not special software like postfix, perhaps you should first look on > dovecot site and list for examples and hints > > Best Regards > MfG Robert Schetterer > > -- > [*] sys4 AG > > http://sys4.de, +49 (89) 30 90 46 64 > Franziskanerstraße 15, 81669 München > > Sitz der Gesellschaft: München, Amtsgericht München: HRB 199263 > Vorstand: Patrick Ben Koetter, Axel von der Ohe, Marc Schiffbauer > Aufsichtsratsvorsitzender: Joerg Heidrich Hi Ram and Robert thank you very much for your pointers, I'll ask on the dovecot mailing list and do some homework :) > PS: 1500 users with 1000 domains means hardly 2 users per domain .. > Are these right numbers ? yes strange but true, almost each domain has just 1 user. Regards and have a nice day, Mike
