Hi Andrzej,
Am 19.05.23 um 17:17 schrieb Andrzej Milewski:
Hello, I may be mistaken, but I don't see "auth_mechanism = plain login" in your configuration. It's possible that you are using something different for authentication, but I don't see it in the configuration.
The config file was output with doveadm config -n, that only shows non-default values. The default is auth_mechanism = plain, and that is explicitly set in conf.d/10-auth.conf.
I'll try Monday if additionally enabling login makes any difference, but I doubt it.
Ralf
On Wed, May 17, 2023 at 4:04 PM Ralf Becker via dovecot dovecot@dovecot.org wrote:
Dovecot 2.3.20 including it's submission server works well with all sorts of clients, but Outlook. Outlook works / can connect to Dovecot IMAP service with same certificate TLS config, but it fails to connect using SMTPs on port 465. Other clients connect and send mails without problem, also openssl s_client can connect and reports no problems. I tried with Outlook Version 365 on Windows 11 (no cloud) and "Microsoft® Outlook® 2021 MSO (Version 2304 Build 16.0.16327.20200) 64-bit". I already enabled all submission_client_workarounds and lowered min_ssl_version from TLSv1.2 to TLSv1, but that changed nothing. I can see nothing failing in the logs, thought the OL connection wizard always check IMAP and SMTP together, so it's hard to say what the problem is. The same two Outlook version connect without a problem to Postfix authenticating via SASL to Dovecot also requiring a minimum TLS version of 1.2. They just wont connect with Dovecot submission server. Any ideas what's wrong, or how to debug that further? Ralf -- Ralf Becker EGroupware GmbH [www.egroupware.org <http://www.egroupware.org>] Handelsregister HRB Kaiserslautern 3587 Geschäftsführer Birgit und Ralf Becker Leibnizstr. 17, 67663 Kaiserslautern, Germany Telefon +49 631 31657-0 _______________________________________________ dovecot mailing list -- dovecot@dovecot.org To unsubscribe send an email to dovecot-leave@dovecot.org-- Andrzej
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-- Ralf Becker EGroupware GmbH [www.egroupware.org] Handelsregister HRB Kaiserslautern 3587 Geschäftsführer Birgit und Ralf Becker Leibnizstr. 17, 67663 Kaiserslautern, Germany Telefon +49 631 31657-0