Re: SUGGESTON FOR: HIGH END MAIL SERVER

nilesh vaghela a écrit :
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 )

Postfix is a good choice, but it seems that sendmail is faster (there is
more security holes, but .. it run faster)


Which pop3 / IMAP server ( thinking for cyrusd )
cyrusd, yes .. but the most important thing is to have a good server
(write cache, optimisez fs like ext3 with noatime)

You can use cyrus-murder to "clusterise" cyrus.


What is the best approach for antivirus and antispam.

Antivirus: you can use clamav ..
for the antispam, amavis use spamassassin by default (works well :)


Which could be the best candidate for web access ( squirrelmail, horde
?? )

Horde is hard to configure,
squirrelmail is hugly

We test "round cube" webmail: all is in ajax, maybe a good solution ?



Service monitoring NMS ( OPENNMS , negois ??)

nagios do the work well :)

Suggestions are welcome.

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


The most important thing: Write cache and Ram !





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