And of course
./conf.d/10-ssl.conf
ssl = required
On 1/27/2022 7:18 AM, Eric Broch wrote:
This is my /etc/dovecot/toaster.conf dovecot authorization mechanisms:
auth_mechanisms = plain login
On 1/27/2022 3:16 AM, Fabio Mecchia wrote:
Hi everyone,
I have been having a weird problem connecting pop 3 to my corporate
server from Outlook and Thunderbird for about two weeks.
When the client tries to connect to the server, I got this error
message "-ERR [AUTH] Unsupported authentication method" and in the
Dovecot logs I found errors like "pop3-login: Info: Disconnected
(tried to use unsupported auth mechanism): user=<x...@xxxxxx.it>,
method=USER, rip=xxx.xxx.xxx.xxx, lip=xxx.xxx.xxx.xxx, TLS,
session=<bXG42jTVxNtc3/SS>
" .
The strange thing is that the same client checks multiple boxes on
the same domain and not all of them give an error, also the error
occurs randomly, maybe for half a day it is impossible to download
the mail and then suddenly it works for a couple of hours.
Using the imap protocol there are no problems.
When the clients manage to connect I find this in the Dovecot logs
"pop3-login: Info: Login: user=<x...@xxxxxx.it>, method=DIGEST-MD5,
rip=xxx.xxx.xxx.xxx, lip=xxx.xxx.xxx.xxx, mpid=5510, TLS,
session=<+0htGDnVWPdc3/SS>", I don't know why on the same client
without changing anything the method switch from USER to DIGEST-MD5
The server is up to date, dovecot version is 2.3.11.3
Any suggestions are welcome
Fabio Mecchia
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