[Dovecot] NO: Unsupported authentication mechanism

[Steve [Dovecot]]

Timo Sirainen wrote:

> On Wed, 2005-09-14 at 17:53 +0100, Steve [Dovecot] wrote:
>  
>
>>        "Net::IMAP::NoResponseError: Unsupported authentication 
>> mechanism"
>> If I change 'LOGIN' to 'CRAM-MD5' (the other value supported by 
>> Net::IMAP) then I get a similar (but not identical) error:
>>        "Net::IMAP::NoResponseError: Authentication failed: 
>> Unsupported authentication mechanism"
>> If I use anything other than either 'LOGIN' or 'CRAM-MD5' I get an 
>> error from the Net::IMAP library saying "Unknown auth type" - which 
>> is reasonable.
>>   
>
>
> PLAIN is the standard plaintext mechanism. If you want to use others,
> you'll have to add them to auth_mechanisms setting. Dovecot also accepts
> LOGIN if you just add it there.
>
>  
>
Ah, ha... I'd assumed that 'LOGIN' as the authentication method for 
Ruby's Net::IMAP was synonymous with 'PLAIN' authentication.  I'm using 
dovecot 0.99.14-r1 under Gentoo and I note that auth.txt makes no 
mention of a 'LOGIN' authentication mechanism.
If I abandon the authenticate() method in Ruby and use the login() 
method instead I get much further... though I have to admit that I am 
confused as to why there's a need for both - as well as why the default 
authenticate() seems to be incompatible with my default dovecot 
configuration... frustrating.

Steve