os10000@??? said:
} Now to the exim-list related part of the message: is there a
} comparison table displaying the features of various MTAs? I mean,
} given that managers are impressed by such stuff, it may be worthwile
} doing one. Also, if you can say "the top 40% email volume are shipped
} by sendmail, then 20% by exim and about 0.1% by Exchange", then people
} will start to listen. If you can say that to support 500 users on
} exim costs you $50 for h/w+s/w and 1 hour/week of sysadmin time,
} whereas exchange costs you $10000 for h/w $10000 for software and 60
} hours/week in sysadmin time, they may just be convinced.
I don't know of one as such. I do know that fitting exchange type systems into
a network is hard work and can sometimes mean running an additional MTA with
decent functionality to clean up the mess it leaves....
There is some interesting stuff at
http://www.unix-vs-nt.org/kirch/sendmail-exchange.html
As for mail volumes....
In the UK I would guess that by message shifting in ISPs exim is at least
3rd ranking and I would be unsurprised by it making first place (the other
contenders being sendmail and qmail). sendmail is used by default by
several people (even ISPs) who never seem to have got the impetus to change.
Qmail is in use by one of the biggies - UUNET/Pipex but I don't know of
other in the UK nor do I have a good feel for their volume. Exim is in
use at a good population of UK ISPs. PP I think is a long way back (if
there at all), MMDF is used by demon for incoming. Microsoft products
don't figure at all for serious contenders (despite the way that they are
cuddling up to people to make them use them - the trouble is even if they give
you the software for naught you still need 4 times as much hardware).
Here's the output of an analysis of mail systems I ran when running open
relay tests earlier in the year (don't go looking for the open relays,
we've stopped them up). This analysis is flawed in that many people
had their systems configured to reject connections at the connect stage
unless they were from known hosts, so those systems are not counted
here. We are also slanted in our take up of mail systems, and
quanity of takeup is not related to quantity of mail moved (some
systems flake out when given more than a couple of messages per
minute.
Product/Family Versions Found
======================================= ======== =====
Apple Internet Mail Server ( 1) 4
CommuniGate ( 1) 1
ElectricMail ( 1) 12
Eudora ( 1) 2
Exim (10) 348
Generic SMTP handler ( 1) 1
GroupWise ( 2) 4
IBM AS/400 SMTP ( 1) 2
IMS ( 1) 2
Integralis/Mimesweeper ( 2) 6
Lotus ( 1) 32
Lyris ( 1) 10
Microsoft Exchange (11) 55
Microsoft SMTP MAIL ( 1) 99
Netscape ( 4) 11
Obtuse Smtpd ( 1) 1
SLMail ( 2) 5
SMTP/smap ( 1) 4
SMTPXD ( 1) 1
Sendmail (28) 567
Smail ( 1) 7
Turnpike ( 1) 1
Unknown (19) 96
VCS FIREWALL ( 1) 2
WindowsNT SMTP Server ( 9) 69
post.office ( 3) 3
Nigel.
--
[ Nigel.Metheringham@??? - Systems Software Engineer ]
[ Tel : +44 113 207 6112 Fax : +44 113 234 6065 ]
[ Real life is but a pale imitation of a Dilbert strip ]
--
*** Exim information can be found at
http://www.exim.org/ ***
