Re: Automatically creating user accounts from exim
On Qua, 17 Jun 2009, David wrote:
Could you point me to docs where I can read more about virtual users?
Most of the Google results are for Virtual Domains, or for Exim in
combination with other software.
Exim doesn't really make a distinction between real users and local
users. It can check /etc/passwd (or some other database) for users,
but it can also check a text file, a database, check for the existence
of a file...
For example, this is a very simple router that checks if the
destination is a local user, and if it is, calls the transport to
store mail in a local file:
localuser:
driver = accept
check_local_user
transport = local_delivery
Here's the said transport:
local_delivery:
driver = appendfile
file = /var/mail/$local_part
delivery_date_add
envelope_to_add
return_path_add
If check_local_user is removed, then all mail that reaches the
localuser router is accepted, and will be stored in
/var/mail/destination. (A few more settings in the transport might be
necessary.)
A user account is not created, though. This part is complicated, what
I can think of is a sending the e-mail (via a pipe transport) that
creates the account. Then it stored the mail, or sends it back to exim
to be processed again.
As for docs, there's the extensive exim manual at
http://www.exim.org/exim-html-current/doc/html/spec_html/ . You'll
certainly need to take a look at the sections about routers and
transports.
--
Eduardo M KALINOWSKI
eduardo@kalinowski.com.br
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