Re: Is XOAUTH2 support broken in 2.3.21?

Citeren Christian Rößner via dovecot dovecot@dovecot.org:

Hi,

I use Roundcube with OIDC. Everything works fine in Dovecot 2.3.20,
but broke in 2.3.21. Downgrading to 2.3.20 makes it work again, so
it is introduced in the newer release.

Error (2.3.21):

Oct  4 11:03:57 mx dovecot[558531]: imap-login: Disconnected:  
Connection closed (client didn't finish SASL auth, waited 1 secs):  
user=<christian@roessner.email>,  
orig_user=<christian@roessner.email>, method=XOAUTH2,  
rip=192.168.0.4, lip=192.168.0.2, TLS, TLSv1.3 with cipher  
TLS_AES_256_GCM_SHA384 (256/256 bits)

Here is an example with 2.3.20:

Success (2.3.20):

Oct  4 11:17:21 mx dovecot[889914]: imap-login: Login:  
user=<christian@roessner.email>,  
orig_user=<christian@roessner.email>, method=XOAUTH2,  
rip=192.168.0.4, lip=192.168.0.2, mpid=891874, TLS, TLSv1.3 with  
cipher TLS_AES_256_GCM_SHA384 (256/256 bits)

Searching the archives might give a lead to what's going on (and a
possible workaround):

https://dovecot.org/mailman3/archives/list/dovecot@dovecot.org/thread/RR2GXL...