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why not using Exchange 2010, has it all
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Any other solution ? <br />
How many server should i have?<br />
i want to discuss as a full solutions.<br />

</div>


Any other solution ?
How many server should i have?
i want to discuss as a full solutions.


<div>
I will suggest to you to hire a consultant for that, full and accurate solution for such a volume cannot be discussed over the internet
</div>


I will suggest to you to hire a consultant for that, full and accurate solution for such a volume cannot be discussed over the internet

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what's the suggest infrustrcure to host 25000 mailbox account ?
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what's the suggest infrustrcure to host 25000 mailbox account ?

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<div class="content wysiwyg-content">
hello, <br />
could you please suggest any mail system that met these requriments except horde and i recmonded if that can working under windows :<br />
Dear Mr. Amin,<br />
According to our phone conversation, please find below the requirements we need for a Mailing System:<br />
1. Number of active mailboxes: 25.000.<br />
2. Maillists (20.000) with automated generation.<br />
3. POP3(s)/IMAP(s)/SMTP(s)<br />
4. Webmail<br />
5. Quota management<br />
6. Management GUI<br />
7. Comprehensive logging.<br />
8. Mailbox migration from old system<br />
9. Antivirus / Antispam / Keyword-based content filtering.<br />
10. Users/maillists management API.<br />
thanks.
</div>
</div>


hello, 
could you please suggest any mail system that met these requriments except horde and i recmonded if that can working under windows :
Dear Mr. Amin,
According to our phone conversation, please find below the requirements we need for a Mailing System:
1. Number of active mailboxes: 25.000.
2. Maillists (20.000) with automated generation.
3. POP3(s)/IMAP(s)/SMTP(s)
4. Webmail
5. Quota management
6. Management GUI
7. Comprehensive logging.
8. Mailbox migration from old system
9. Antivirus / Antispam / Keyword-based content filtering.
10. Users/maillists management API.
thanks.

mail system

Within Internet message handling services (MHS), a message transfer agent or mail transfer agent (MTA) or mail relay is software that transfers electronic mail messages from one computer to another using a client–server application architecture. A MTA implements both the client (sending) and server (receiving) portions of the Simple Mail Transfer Protocol (SMTP). The terms mail server, mail exchanger, and MX host may also refer to a computer performing the MTA function. The Domain Name System (DNS) associates a mail server to a domain with mail exchanger (MX) resource records containing the domain name of a host providing MTA services.

Email Servers

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.