Setting up shared mailboxes in dovecot

[edited 28.06.2013]
Sometimes you need mail adresses and postboxes that need to be accessed by multiple persons. In a company for example there could be a mailbox sales@yourcompany.com and if you are planning for example a wedding it can be a good idea to have an accoutn wedding@yourdomain.tld that can be accessed by you and yor (future) wife. It is definitly not the best idea to create a “normal” account and just give the password to all people who might need it. This might leed to confusion (and data loss). In my opnion accounts should always be bound to a person.
The solution for my <bbr title=”Local Delivery Agent”LDA (aka mailserver) dovecot is called “SharedMailboxes”, ie mailboxes that are shared between users and linked to their accounts. It wasn’t that easy to setup but finally I could get it to work in the following way:
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Ldap replication with syncrepl and ssl

In this post I’m going to describe how I use ldap replication to sync user accounts from my web server to my home server.
On my home server I’m going to setup a ldap server as well. As the user accounts on the “web server” are already stored in a ldap it seems logical to use ldap replication to keep both servers in sync. The ldap on the “web server” (my rented server running mail server, web server, onwcloud etc.) will be used as master, the home server will be the slave. It seems now to be common to talk about provider and consumer instead of master and slave. By the way I consider these terms to be more apropriate for the situation they describe.
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Mailserver with ldap tutorial – part 6: sieve

Sometimes it is useful to have the mailserver sort mails in different folders – especially when you use different deveices to read your mail. You could have a folder spam for mails tagged as spam by spamassasin and mailinglists for mailinglist which you maybe don’t want to read on your smartphone. A nice and mighty way to do such filtering is to use sieve.

This is step 6 of the 8 step tutorial for setting up a mailserver with openldap, postfix and dovecot using virtual users. You can find the overview here.
I’m asuming that all commands are executed with root rights.

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Mailserver with ldap tutorial – part 5: virus and spam protection

After I’ve described how to set up and test a mailserver with openldap, postfix and dovecot it still needs some basic filters for virus and spam protection.

This is step 5 of the 8 step tutorial for setting up a mailserver with openldap, postfix and dovecot using virtual users. You can find the overview here.
I’m asuming that all commands are executed with root rights.

Continue reading “Mailserver with ldap tutorial – part 5: virus and spam protection”

Mailserver with ldap tutorial – part 4: testing

After I’ve described how to set up a mailserver with openldap, postfix and dovecot it’s now time to test it and make sure everything works.

This is step 4 of the 8 step tutorial for setting up a mailserver with openldap, postfix and dovecot using virtual users. You can find the overview here.
I’m asuming that all commands are executed with root rights.

Continue reading “Mailserver with ldap tutorial – part 4: testing”

Mailserver with ldap tutorial – part 3: postfix

After we’ve setup openldap in part 1 and dovecot in part 2, I’m going to describe in this post how to setup postfix. Postfix will act as mail transport agent ie as the connection to the world for our mailserver.

This is step 3 of the 8 step tutorial for setting up a mailserver with openldap, postfix and dovecot using virtual users. You can find the overview here.
I’m asuming that all commands are executed with root rights.

Continue reading “Mailserver with ldap tutorial – part 3: postfix”