E-mail and Calendaring solution for 40,000 users

E-mail applications
Microsoft Exchange
We are researching a solution to provide E-mail and Calendar for up to 40,000 users. This process would bring together existing users of various messaging platforms most notebly - Exchange, Domino, and POP. These users presently use Outlook, Notes, and browser based clients. The proposed mail system would combine several existing mail systems manageed by numerous separate entities today. We would like to find a solution that: -Is rock solid and attractively priced -Provides possible migration paths from existing systems -Runs on Linux (possibly on the zServer) -Has good support with possible 7x24 options -Is easy to maintain and manage -Provides for SPAM and Virus protection (internal or external) We would appreciate any input from those of you that have combined several (possibly) large E-mail systems. Thanks.

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From the description of your propose project it sound like something I have done. You mention that you have Exchange, Domino, POP and browser users. Not knowing what version of Domino you have I can tell you that it is the only messaging package that will server your needs for now and in the future.

Here is why:

Hardware independent
Easy to use
Build in ACL, Access control List
Anti-Spam build in features
Any numbers of Anti Virus protections
Can use the browse for email, iNotes and your calendar & scheduling will ready and available to all users
POP Mail access via Outlook or any Oulook client, if you use the Extended mail template, meetingand Calendar are available via Outlook.

Native LDAP support for name resolution for POP users

The 6.5.x server and client can support a very large number of mail users. You also have and can use the WorkSpace as mini Portal. And the future of IBM Domino/Lotus is looking even better with the support for all open standards. Three years down the road you can migrate your user to the new messaging service from IBM with minimal investment.

Another good thing about this solution is that you have Collaboration build in into the client.

Well, good luck and you need a good messaging engineer let me know.

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