Have a look at the Hermes mail system at cam.Ac.uk, built buy among people Philip Hazel of exam fame
It will give you some insight into the challenges of building a scalable high perfomance mail system. Martin On Wednesday, 8 June 2011, Steve Spence <steve.spe...@arkitechs.com> wrote: > > > That what I found with most the open source /Linux mail products that > customizing and extending can be difficult and a lot of time and effort. > The exchange is one of the easiest ways to roll out large scale web base > email if just expensive in upfront costs. > > Interns of Hotmail they initially use to use Solaris for the MTA and > storage and FreeBSD for the web services ( Apache ) they suppose of migrated > windows by now using windows products Again I think this highly customize > solution which may not be very useful http://en.wikipedia.org/wiki/Hotmail > > we went through a similar search for a high volume solution which we could > customize and brand right now we using we high a hybrid of > (exchange/Icewarp/Atmail/ two layers of spam filtering ) > > Steve > > > > -----Original Message----- > From: Ryan Pugatch [mailto:r...@linux.com] > Sent: Tuesday, June 07, 2011 11:40 PM > To: John LeCoque > Cc: nanog@nanog.org > Subject: Re: Hotmail? > >> What about starting with Zimbra's Open Source edition, and building >> onto it? >> > > Let me just step in here and say.. it's tough to build onto Zimbra. At > work, we support ~1000 users on Zimbra (network edition), with hundreds of > thousands of messages flowing through daily, and it doesn't like you > tinkering with stuff under the hood. Most of your customizations get blown > away when you upgrade. That said, I know of some organizations who > customize it like crazy (I had heard that Lycos's free mail system is > Zimbra-based, and Yahoo as well). Once you deviate, though, don't expect to > stick to Zimbra's releases. It might be easier to just start fresh with > postfix, amavis, spamassassin, dovecot, etc. We've also run into some pain > in scaling it out (they want you to use Red Hat Clustering, but there's no > great way to scale out the mail store regardless). > > Ryan > > > > > -- -- Martin Hepworth Oxford, UK
