Dovecot version 2.3.16 Trying to use Azure AD / Entra Id with OAuth2 authentication, I have most of it working but somehow Dovecot fails to map / recognize the username, hopefully somebody can point out what I'm doing wrong?
Excerpt from log: Jan 26 09:13:20 localhost dovecot: auth: Debug: http-client: conn [2603:1026:3000:108::4]:443 [1]: Got 200 response for request [Req1: POST https://login.microsoftonline.com/79b065d9-761f-4b79-a5cb-71a452f452af/oauth2/v2.0/token]: OK (took 220 ms + 82 ms in queue) Jan 26 09:13:20 localhost dovecot: auth: Debug: oauth2(test-exter...@secumailer.com,2a05:d018:ebe:d005:22b6:dc4b:41c6:7fec): Password grant succeeded Jan 26 09:13:20 localhost dovecot: auth: Debug: oauth2(test-exter...@secumailer.com,2a05:d018:ebe:d005:22b6:dc4b:41c6:7fec): Processing field token_type Jan 26 09:13:20 localhost dovecot: auth: Debug: oauth2(test-exter...@secumailer.com,2a05:d018:ebe:d005:22b6:dc4b:41c6:7fec): Processing field scope Jan 26 09:13:20 localhost dovecot: auth: Debug: oauth2(test-exter...@secumailer.com,2a05:d018:ebe:d005:22b6:dc4b:41c6:7fec): Processing field expires_in Jan 26 09:13:20 localhost dovecot: auth: Debug: oauth2(test-exter...@secumailer.com,2a05:d018:ebe:d005:22b6:dc4b:41c6:7fec): Processing field ext_expires_in Jan 26 09:13:20 localhost dovecot: auth: Debug: oauth2(test-exter...@secumailer.com,2a05:d018:ebe:d005:22b6:dc4b:41c6:7fec): Processing field access_token Jan 26 09:13:20 localhost dovecot: auth: Error: oauth2(test-exter...@secumailer.com,2a05:d018:ebe:d005:22b6:dc4b:41c6:7fec): oauth2 failed: Password grant failed: No username returned I'm using Resource Owner Password Grant flow. I have the following configured in conf.d/auth-oauth.conf.ext: passdb { driver = oauth2 mechanisms = plain args = /etc/dovecot/dovecot-oauth2.plain.conf.ext } I have the following configured in dovecot-oauth2.plain.conf.ext: grant_url = https://login.microsoftonline.com/<redacted>/oauth2/v2.0/token client_id = <redacted> client_secret = <redacted> username_attribute = email use_grant_password = yes scope = api://<redacted>/mail-relay debug = yes rawlog_dir = /tmp/oauth2 I have the following response from the oauth raw logs: out: 1706256800.309971 POST /<redacted>/oauth2/v2.0/token HTTP/1.1 1706256800.309971 Host: login.microsoftonline.com 1706256800.309971 Date: Fri, 26 Jan 2024 08:13:20 GMT 1706256800.309971 User-Agent: dovecot-oauth2-passdb/2.3.16 1706256800.309971 Content-Length: 255 1706256800.309971 Connection: Keep-Alive 1706256800.310013 Content-Type: application/x-www-form-urlencoded 1706256800.310018 1706256800.310056 grant_type=password&username=test-exter...@example.org&password=<redacted>&client_id=<redacted>&client_secret=<redacted>&scope=api:%2f%2f<redacted>%2fmail-relay in: 1706256800.530754 HTTP/1.1 200 OK 1706256800.530754 Cache-Control: no-store, no-cache 1706256800.530754 Pragma: no-cache 1706256800.530754 Content-Type: application/json; charset=utf-8 1706256800.530754 Expires: -1 1706256800.530754 Strict-Transport-Security: max-age=31536000; includeSubDomains 1706256800.530754 X-Content-Type-Options: nosniff 1706256800.530754 P3P: CP="DSP CUR OTPi IND OTRi ONL FIN" 1706256800.530754 x-ms-request-id: 629ce7bf-a5e9-4655-9019-83690c8b4400 1706256800.530754 x-ms-ests-server: 2.1.17122.2 - SEC ProdSlices 1706256800.530754 X-XSS-Protection: 0 1706256800.530754 Set-Cookie: fpc=Am8EyNTmX2ZOkMLj2MB82W4gKLwwAQAAAJ9gRd0OAAAA; expires=Sun, 25-Feb-2024 08:13:20 GMT; path=/; secure; HttpOnly; SameSite=None 1706256800.530754 Set-Cookie: x-ms-gateway-slice=estsfd; path=/; secure; samesite=none; httponly 1706256800.530754 Set-Cookie: stsservicecookie=estsfd; path=/; secure; samesite=none; httponly 1706256800.530754 Date: Fri, 26 Jan 2024 08:13:20 GMT 1706256800.530754 Content-Length: 1979 1706256800.530754 1706256800.530754 {"token_type":"Bearer","scope":"api://<redacted>/mail-relay","expires_in":5296,"ext_expires_in":5296,"access_token":"eyJ0eX ...<redacted>"} If I inspect the access token I'm getting: { "aud": "<redacted>", "iss": "<redacted>", "iat": 1706256500, "nbf": 1706256500, "exp": 1706262097, "acr": "1", "aio": "ATQAy/8VAAAANgbkS6NmHL3yGyROhLM28ooLX57pCjHjp0TGtd7EjwgVZy/i2aEqfV6sxiHeGZ0N", "amr": [ "pwd" ], "appid": "<redacted>", "appidacr": "1", "email": "test-exter...@example.org", "ipaddr": "<redacted>", "login_hint": "<redacted>", "name": "test-external", "oid": "657401f0-c9f0-402c-af6f-9ef063e7a281", "preferred_username": "test-exter...@example.org", "rh": "0.ATEA2WWweR92eUuly3GkUvRSr08CZ45J3dRLnCQJZCVUYBcxAKo.", "scp": "mail-relay", "sub": "ST9owcQQN2e0tBsHiVjvR8SCdlfUR_114tJk4C2bRxg", "tid": "79b065d9-761f-4b79-a5cb-71a452f452af", "unique_name": "test-exter...@sexample.org", "upn": "test-exter...@example.org", "uti": "v-ecYumlVUaQGYNpDItEAA", "ver": "1.0" } The email attribute is present in the access token yet Dovecot doesnt appear to recognize it. What am I doing wrong? _______________________________________________ dovecot mailing list -- dovecot@dovecot.org To unsubscribe send an email to dovecot-le...@dovecot.org
