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Migrate our mail server (ldap/postfix/cyrus) to google apps

Hello,

We are a company with about 25 user accounts and about 36 GB of mail

data (including cyrus squatter indexes).

Our mail is currently served by a Centos4 mail server with postfix as MTA and

cyrus as backend. Our users access their mail via secured IMAP (TLS) or via

squirrelmail (https). Our users and their passwords are stored in an openldap

server. Postfix, cyrus imap and openldap used are the from latest version from

Centos 4. We use a combination of spamassassin, clamav and sagator to reject

spam and viruses. We also have a mailman service for about 30 mailing-lists.

We have a 4Mb/s SDLS connexion to Internet.

Our server is reaching its limits (both storagewise and CPUwise) and instead

of upgrading it, we would like to move to google apps (Premier Edition).

We are looking for someone to manage this move. Here are some of our most

important requirements:

Probably easy:

a) our users should keep all their existing mails

b) our users should be able to access their mails through IMAP (SSL or TLS)

with their thunderbird clients as well as with the google web interface

c) some users have special aliases (like johnny _at_ [url removed, login to view] -> john _at_ [url removed, login to view])

Harder ?

d) our users should be able to use both firstname _at_ [url removed, login to view] and lastname _at_ [url removed, login to view]

to get their mails (in our current setup, lastname is the account name, and we create the

firstname alias based on ldap data)

e) The login name should be the ldap account name (we use the lastname)

f) our users should continue to get mail for different domains (john _at_ [url removed, login to view] and

john _at_ [url removed, login to view] should both work)

g) We might want to introduce a third domain (john _at_ [url removed, login to view] and john _at_ [url removed, login to view]

and john _at_ [url removed, login to view] should all work)

h) the transition should take place during a weekend (Paris time) and no mails should be lost.

Maybe, we can do an incremental update via IMAP (for many days if needed) so

that most of the old mails would be there by the migration date and the weekend

migration would only be copying the 'new' mails to google apps.

Even harder ?

i) I would like the passwords for the mail accounts to be fetched from our ldap server live

j) Creation of a user in ldap should also create the associated mailbox and configuration on google apps

k) We want to be able to continue to use our mailing-lists (either self-hosted or via google apps)

l) a special alias 'everybody _at_ [url removed, login to view]' should send mail to everybody (with a valid ldap account)

m) some special aliases should be created/updated based on ldap group membership. Eg as long as a

user is in the ldap group 'accounting' they should receive mails sent to 'accounting _at_ [url removed, login to view]'

n) Ideally, hyphen-addressing should continue to work (ie one user 'john _at_ [url removed, login to view]' should be

able to give any address of the form 'john-anything _at_ [url removed, login to view]' and get their mail

automatically in their mailbox

Since we know that google only supports plus-adressing

[url removed, login to view];answer=12096

we can think of a phase-out transition of about 6 month where minus-adresses are rewriten

into plus-addresses on a front server. This server should give us a list of the re-written

addresses regularely so that our users can update them.

A tgz file with our current configuration files is available upon request.

What I expect:

1) understanding of our situation and critical analysis of our requirements (maybe I forgot something

important !). Feaseability analysis of our requirements a) to n). If some requirements are not

(or do not seem) possible, discussion with me to find the best workaround

2) detailed technical documentation on HOW to do the move. Should we have a problem, the

'rollback' procedure should be clear too.

3) Help with the actual move

Each step should be validated by me prior to taking the next step.

Best regards,

Antoine

NOTE1: g) looks easy: we could start with the setup of [url removed, login to view] on google apps, get things working,

and only once everything is OK change the MXs for our other domains and switch the users to

use google apps.

NOTE2: c) d) f) g) and n) mean that a user "john doze" with special alias johnny should be able to read

their mails sent the following addresses from the same account:

john _at_ [url removed, login to view]

doze _at_ [url removed, login to view]

johnny _at_ [url removed, login to view]

john _at_ [url removed, login to view]

doze _at_ [url removed, login to view]

johnny _at_ [url removed, login to view]

john _at_ [url removed, login to view]

doze _at_ [url removed, login to view]

johnny _at_ [url removed, login to view]

john-anything _at_ [url removed, login to view]

doze-anything _at_ [url removed, login to view]

john-anything _at_ [url removed, login to view]

doze-anything _at_ [url removed, login to view]

john-anything _at_ [url removed, login to view]

doze-anything _at_ [url removed, login to view]

doze+anything _at_ [url removed, login to view]

doze+anything _at_ [url removed, login to view]

doze+anything _at_ [url removed, login to view]

Taidot: Linux, Järjestelmänvalvoja

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About the Employer:
( 9 reviews ) Paris, France

Projektin tunnus: #503356

10 freelanceria on tarjonnut keskimäärin 674 $ tähän työhön

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I can help you. Please see PMB.

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lijum

hello, I would like to figure out this issue with my knowledge and expertism but I need someone help from your side. As though it can definitely possible as though you are moving to premier edition ( we can get supp Lisää

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I believe I can do this for you.

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Proven Google API and Google App API experience.

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