[Dovecot] Requested CRAM-MD5 scheme, but we have only MD5-CRYPT

Timo Sirainen tss at iki.fi
Sun Jun 1 22:34:09 EEST 2008

On Sun, 2008-06-01 at 13:27 -0600, Richard Pyne wrote:
> On 1 Jun 2008 at 14:18, Timo Sirainen wrote:
> > On Jun 1, 2008, at 6:39 AM, Richard Pyne wrote:
> > 
> > > After upgrading my dovecot installation about a month ago, I have  
> > > started
> > > seeing "Requested CRAM-MD5 scheme, but we have only MD5-CRYPT"
> > message
> > > from dovecot in my logs.
> > 
> > CRAM-MD5 authentication can't be used with MD5-CRYPT passwords. See
> > http://wiki.dovecot.org/Authentication/Mechanisms 
> >   and http://wiki.dovecot.org/Authentication/PasswordSchemes
> Okay, so tell me something I don't already know. This system has run just 
> fine for over a year, and then all of a sudden I start getting these 
> warning messages. I have made NO changes to any system configuration. The 
> only changes that correspond to when the messages started to appear are 1) 
> I updated version of dovecot, and 2) I added a new user.

One of your users decided to start using a mail client (or reconfigure
their existing one) that tries to use CRAM-MD5 authentication. Are all
of your passwords MD5-CRYPT? If so, just remove CRAM-MD5 from auth
mechanisms list since it can't work. Clients won't try to use it then.

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