On 10/12/2013 13:57, Charles Marcus wrote:
I don't find any available statistics for Market share, but my ballpark guesses for non-service provider commercial environments are something like (Only thinking about MDAs, not MTAs):Hello,There has been some whispers about considering migrating our mail systems to Exchange Server, and I want to try to nip this in the bud if possible.I would like to ask for some help with providing some kind of comparison of mid to large(r) commercial companies use of email systems... specifically, those using Microsoft Exchange Server, vs those using open source Linux/Unix based systems (including even commercial *nix groupware based systems like Zimbra, as well as plain mail systems like dovecot, or cyrus or courier.I know that many (if they are smart) Admins that do use Exchange internally will use postfix (or something else *nix based) in front of it as their relayhost (for both inbound and outbound), so just counting the number of publicly accessible smtp servers won't be a good gauge.Does anyone know of any decent non-biased studies that have been done, hopefully relatively recently (last few years), that provide such a comparison?
Microsoft Exchange ~ 65% IBM Notes ~ 32% Others ~ 3%All the above probably have open source or open source based appliance MTAs as a majority, acting as smarthosts, anti-spam / anti-virus, load-balancers etc...
Other than in the service provider space I don't think you'll find many using open-source MDAs.
-- Regards, Giles Coochey, CCNP, CCNA, CCNAS NetSecSpec Ltd +44 (0) 8444 780677 +44 (0) 7983 877438 http://www.coochey.net http://www.netsecspec.co.uk gi...@coochey.net
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