r6805 - in trunk/BOOK: . basicnet/mailnews introduction/welcome

Alexander E. Patrakov patrakov at ums.usu.ru
Wed Jun 13 07:31:08 PDT 2007


Dan Nicholson wrote:
> On 6/13/07, Alexander E. Patrakov <patrakov at ums.usu.ru> wrote:
>> Dan Nicholson wrote:
>>
>>> To be fair, the SMTP code has no additional dependencies. The SMTP
>>> auth code requires one additional dependency, cyrus-sasl. And that's
>>> no different than if you want to use POP or IMAP with authentication.
>>> So, for me, it added no dependencies.
>>> Keep in mind that the --enable-pop and --enable-imap options have been
>>> in the book for months and it didn't bother anyone that sasl wasn't
>>> explained, even though it's the exact same issue as SMTP auth.
>> Where have you seen POP or IMAP without authentication??? It _is_ different.
>> E.g., without installing Cyrus SASL, I can read my ums.usu.ru mail from home
>> via IMAP-over-SSL, but can't send anything via SMTP-over-SSL. ums.usu.ru
>> runs Courier MTA and requires authentication for both IMAP and SMTP.
> 
> Because most IMAP and POP servers do plaintext authentication, which
> doesn't require sasl. However, most SMTP servers do something like
> CRAM-MD5 authentication (or NTLM on Exchange), which does require
> sasl. But it's perfectly valid to use a stronger mechanism for IMAP or
> a weaker one for SMTP. But in general, it was too strict to say that
> sasl is required for IMAP authentication.
> 
> Try running mutt with debugging and it should tell you what type of
> authenticators are used in each case.

IMAP: PLAIN (works fine without Cyrus SASL in Mutt)
SMTP: PLAIN (does not work without Cyrus SASL in Mutt)

-- 
Alexander E. Patrakov



More information about the blfs-book mailing list