> On 14/05/2026 02:11 EEST David Koski via dovecot <[email protected]> wrote: > > > Hello, > > I just put a new Postfix with Dovecot 2.4 server on line migrating the > email from Dovecot 2.3. I have discovered a number of clients (all > copiers so far) that no longer authenticate SMTP. Mechanisms configured: > > auth_mechanisms = plain login gssapi cram-md5 digest-md5 > > I found that if I disable all encrypted password methods (some copiers > list them separately with a checkbox) and leave only plain/login on the > client side, then it succeeds. But sometimes it is not necessary. It's > almost as if it only tries once and gives up if it fails. I'm not sure > how it is actually supposed to work. But it worked with Dovecot 2.3. I > did test one account with an encrypted password like "{CRAM-MD5}6e3..." > successfully. But other accounts failed. It almost looks like the > encryption method must be specified on the client side to match the > server before it will work consistently. I know that password > encryption is unnecessary with STARTTLS but I have to live with it now. > I have noticed that Thunderbird configured with encryption silently > falls back to plain/login so I didn't notice a problem. > > Regards, > David Koski > [email protected]
Hi! Can you send doveconf and logs with `log_debug=category=auth` please? Aki _______________________________________________ dovecot mailing list -- [email protected] To unsubscribe send an email to [email protected]
