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Dear All,

We are in planning for high end mailing services the criteria is:

# starting with 2,00,000 user initially
# can be reach upto 5,00,000 users within 2-3 years.
# Need web access
# POP3 / IMAP/ and SMTP services
# Redundancy for server.
# Service monitoring and alarm for any critical failure.
# Antispam and Antivirus services.
# Backup obviously..

What could be the server or servers config ( dedicated number of POP3/ IMAP
and SMTP server, Dedicated Antivirus and Antispam server / servers,
dedicated server for web access etc ).

Which is the best MTA to handle mail services ?? ( Qmail, POSTFIX -- or any
other )
Which pop3 / IMAP server ( thinking for cyrusd )
What is the best approach for antivirus and antispam.
Which could be the best candidate for web access ( squirrelmail, horde ?? )
Service monitoring NMS ( OPENNMS , negois ??)

Suggestions are welcome.

Any body handling this kind of setup please give suggestion so can plan for
the hardware and selection of the services.

Nilesh Vaghela
Redhat Channel Partner and Training Partner
74, Nalanda Complex, Satellite Rd, Ahmedabad
25, The Emperor, Fatehgunj, Baroda.

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