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http://forums.mozillazine.org/viewtopic.php?f=28&t=1858105
Apr 19, 2010 · It does not support authentication (SMTP-AUTH) but you have chosen to use authentication. Uncheck 'Use name and password' for that server or contact your service provider." Because I had deleted and set up the account again, I immediately suspected that I had an option set up that the ISP couldn't handle.
https://www.askmefast.com/Server_does_not_support_authentication-qna1435467.html
Server does not support authentication email phone. I am trying to set up my galaxy 2 7.0 email account with cogeco.ca it says server cannot support the authentication. what does that mean? Need to set up vpn for a htc inspire att phone for straight talk. need setting in 123 steps? Server does not support authentication android phone
https://docs.oracle.com/cd/E17952_01/mysql-5.5-en/old-client.html
shell> mysql Client does not support authentication protocol requested by server; consider upgrading MySQL client To deal with this problem, the preferred solution is to upgrade all client programs to use a 4.1.1 or higher client library. If that is not possible, use one of the following approaches:
https://www.3cx.com/community/threads/the-smtp-server-does-not-support-authentication.58684/
Aug 17, 2018 · I could not make it work again, so I tried to fall back to the 3CX SMTP server, but this gives the same error: "The SMTP server does not support authentication." even as Outlook.com and Gmail (also tried as Custom SMTP server). After all my tests I restarted the 3CX services (and sometimes a reboot of the machine)
https://stackoverflow.com/questions/50424900/error-client-does-not-support-authentication-protocol-requested-by-server-cons
MysqlNonTransientException: client does not support authentication protocol requested by server; consider upgrading Mysql client 1 Mysql version 8.0 not authenticating using Java due to New Default Authentication Plugin : caching_sha2_password
https://stackoverflow.com/questions/50093144/mysql-8-0-client-does-not-support-authentication-protocol-requested-by-server
This document extensively discusses caching_sha2_password and of course why it should NOT be a first choice to downgrade the authentication method. With that, I believe Aidin's answer should be the accepted answer. Instead of downgrading the authentication method, use a connector which matches the server's version instead.
https://superuser.com/questions/95401/it-does-not-support-authentication-smtp-auth-error-in-thunderbird-3
It does not support authentication (SMTP-AUTH) but you have chosen to use authentication. Uncheck 'Use name and password' for that server or contact your service provider. I didn't find anywhere from account settings dialog box a check box saying Use name and password .
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