[olug] Postfix & dovecot

[Lou Duchez]

I don't know how to do that, sorry. Quickest way might be to figure out 
how to make Dovecot use system authentication, and then Postfix will be 
able to glom on to that.

> I want to use the system authentication
>
> On Fri, Oct 19, 2012 at 1:28 AM, Lou Duchez <lou at paprikash.com> wrote:
>> Do you mean you're setting up a mail server for foo.com, bar.com, oob.com,
>> and arf.com: so if I am sending an E-Mail to frank at foo.com, the E-Mail
>> should be delivered to the server you're setting up, and should wait there
>> so Frank can IMAP in and read it?
>>
>> To handle the accepting of mail from any source, here's what you'd need in
>> /etc/postfix/main.cf:
>>
>> virtual_mailbox_domains = foo.com bar.com oob.com arf.com
>> smtpd_relay_restrictions = permit_sasl_authenticated
>> reject_unauth_destination permit
>>
>> As for Dovecot and IMAP (and I would guess you'll want to use Dovecot
>> authentication for your Postfix SMTP relay), here's what works for me, based
>> on the following design:
>>
>> -    I've got a directory called /vmail .
>> -    E-Mail to frank at foo.com is stored under /vmail/Maildir/foo.com/frank .
>> -    I've got a text file called /vmail/passwords that lists my logins and
>> passwords (the format will be specified below).
>> -    I've created users "dovecot" and "postfix" to run their respective
>> utilities.
>> -    "dovecot" is UID 501 and GID 501.
>> -    There will be a socket called /vmail/passwordsocket that dovecot
>> creates, so that postfix has a way to ask dovecot to validate logins and
>> passwords.
>> -    This is by no means the best or most secure system out there.  I'm just
>> trying to give you a simple thing to get the ball rolling.
>>
>> In /etc/dovecot/dovecot.conf:
>>
>> auth_mechanisms = plain login
>> disable_plaintext_auth = no
>> mail_location = maildir:/vmail/Maildir/%d/%n
>> userdb {
>>    args = /vmail/passwords
>>    driver = passwd-file
>> }
>> passdb {
>>    args = /vmail/passwords
>>    driver = passwd-file
>> }
>> service auth {
>>    unix_listener /vmail/passwordsocket {
>>      group = postfix
>>      mode = 0660
>>      user = postfix
>>    }
>>    user = dovecot
>> }
>>
>>
>> And in /etc/postfix/main.cf, you'd need the following:
>>
>> virtual_mailbox_base = /vmail
>> home_mailbox = Maildir/
>> virtual_minimum_uid = 100
>> virtual_uid_maps = static:501
>> virtual_gid_maps = static:501
>> smtpd_sasl_auth_enable = yes
>> broken_sasl_auth_clients = yes
>> smtpd_sasl_type = dovecot
>> smtpd_sasl_path = /vmail/passwordsocket
>> virtual_mailbox_maps = hash:/etc/postfix/vmailbox
>> virtual_alias_maps = hash:/etc/postfix/virtual
>> show_user_unknown_table_name = yes
>> inet_interfaces = all
>> myhostname = mail.foo.com
>>
>>
>>
>> After that is the small matter of defining your mailboxes.  Your
>> /vmail/passwords would contain lines that looked like:
>>
>> frank at foo.com:{plain}frankspassword:dovecot:dovecot
>>
>> And postfix would need entries set up in /etc/postfix/vmailbox that looked
>> like:
>>
>> frank at foo.com    foo.com/frank/
>>
>> After any changes to /etc/postfix/vmailbox you'd need to run "postmap
>> /etc/postfix/vmailbox".
>>
>>
>>
>> I think this is just about right; I'm basing this on a configuration that I
>> set up years ago, it has served me well, and I have since modified it to add
>> assorted functionality.  Hopefully I have provided all the necessary nuts
>> and bolts and haven't left anything out, IKEA style.
>>
>>
>>
>>
>>
>>> How do I set postfix up to accept mail from any source for four
>>> different domains with no user diferentiation?  how do i set up
>>> dovecot to use passwd authentication and provide IMAP services for
>>> those users?
>>>
>>>
>>> Sam
>>>
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>
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