On 01-03-2022 07:15, Aki Tuomi wrote:
On 01/03/2022 03:54 Matthew R <matt...@staff.libraryofcode.org> wrote:


Hi guys, we're using Dovecot/Postfix here for our mail system. I'd like to 
switch the `passdb` authentication on Dovecot from PAM over to a custom 
implementation. We'd prefer to have some sort of script check the password with 
an external IAM provider via HTTP. Is there any way we can accomplish this?
The idea is to have Dovecot somehow call a script or send a username/password 
to some service, which checks the username/password against the identity 
provider and returns a “yes/no” back to Dovecot.

`checkpassword` seems like it may work but I see no documentation on its API.


Matthew R, AD, FSEN, FSO, FSCR
Chief Director of Engineering & Chairman of the Board of Directors
Library of Code sp-us
matt...@staff.libraryofcode.org
Hi!

Your best choice is to use a Lua script, see 
https://doc.dovecot.org/configuration_manual/authentication/lua_based_authentication/

Aki

Another option would be to use the pam interface in Dovecot, to configure pam_script or pam_python and implement your authentication code in bash or python.

- Kees

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