[Dovecot] Dovecot 1.2.13 intermittent authentication failures

[Timo Sirainen]

On Tue, 2010-08-03 at 21:18 -0500, C. Bensend wrote:
>    Well, I cranked the debug back up all the way and captured the
> password.  After whipping up a quick perl script to decode it,
> it gives me my username and password, end-to-end, no delimiter.
> Both the username and password are correct, and are the correct
> case.  If that is the correct format for the Base 64-encoded
> string, it seems to be the right content.

So it's either

NUL username NUL password

or

username NUL username NUL password

?

>    So.  Uh.  Why is dovecot giving back a "password mismatch" ?
> I don't believe it's the system's authentication mechanism doing
> anything weird, I have yet to fail a single SSH authentication (and
> yes, I do use both password and key-based auth).

Wonder if it has to do with a single process doing multiple lookups.
That's the main difference compared to SSH and pretty much everything
else.